What ONASSIS FOUNDATION does

The Onassis Foundation (Alexander S. Onassis Public Benefit Foundation) is a private non-profit organization established in 1975 by Aristotle Onassis, headquartered in Vaduz, Liechtenstein with principal operations in Athens, Greece and a regional presence in New York. The Foundation operates across three pillars — Culture, Health, and Education — through a portfolio of wholly-owned subsidiaries including Onassis Stegi (a performing arts venue hosting 15,000+ performances since 2010), the Onassis Hospital system (Onassis Cardiac Surgery Center, National Transplant Center, and Paediatric Hospital being unified into a single digitized facility in 2025), 22 Onassis Public Schools funded by a €160 million donation, the Onassis Library, the Cavafy Archive, and a scholarship program that has awarded 8,000+ grants since 1978.

Its core technology platform centers on ONX Studio (Onassis eXtended Realities), a global hub with locations in New York and Athens that supports artists working in AI, virtual reality, spatial computing, and born-digital media, with projects showcased at Sundance, Tribeca, Venice Immersive, and Ars Electronica. Digital distribution is operated through Onassis Channel (YouTube) for original video content and STEGI.RADIO for 24/7 music streaming featuring 160+ artists. The Foundation's business model is endowment-driven rather than commercially maximized: ticket sales through a tiered Zone A/B/C pricing structure at Onassis Stegi, free Friends membership driving loyalty, the AMPHIBIAN restaurant, donations, and strategic philanthropy fund operations, while healthcare facilities are donated to the Greek State.

The Foundation reaches audiences globally through a touring program spanning 200+ cities across 56 countries and serves diverse customer segments including Greek healthcare patients, students from primary through doctoral levels, arts audiences, and international cultural institutions and artists collaborating via ONX Studio partnerships with entities including BAM, Sundance, Tribeca, Venice, NYU, and Nokia Bell Labs.

Name

ONASSIS FOUNDATION

Legal name

ARIONA HELLAS CULTURAL, TECHNICAL AND CONSTRUCTIONAL SOCIETE ANONYME

Website

https://onassis.org

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

101–250 employees

Short description

The Onassis Foundation is a private non-profit public benefit foundation established in 1975 by Aristotle Onassis, operating across culture, healthcare, and education pillars through subsidiaries including Onassis Stegi, the Onassis Hospital system, 22 public schools, ONX Studio for extended-reality art, and a global scholarship program. It serves Greek citizens, students, arts audiences, and international cultural institutions, funded by its endowment.

Ownership category

akta.pro rank

Product category

Cultural and Public Benefit Foundation Services

NAICS

Grantmaking Foundations (813211), Grantmaking and Giving Services (81321), Educational Services (611), Voluntary Health Organizations (813212), Museums, Historical Sites, and Similar Institutions (712)

SIC

Services-Social Services (8300), Services-Educational Services (8200), Hospital & Medical Service Plans (6324), Television Broadcasting Stations (4833)

akta.pro primary industry

International Grantmaking & Development Foundations (BPAGAKAH)

akta.pro secondary industries

Arts, Culture & Humanities Grantmaking Foundations (BPAGAKAJ), Education Grantmaking Foundations (BPAGAKAK), Health & Medical Research Grantmaking Foundations (BPAGAKAL), Scholarship & Fellowship Foundations and Trusts (EDADAHAC), Volunteer Program Funding, Scholarships & Fundraising Support (EDAIAGAO)

Keywords

• Cultural foundation services
• Performing arts programming
• Public healthcare services
• Educational scholarships
• Extended reality art

Headquarters

HQ city

Athens

HQ country

Greece

HQ region

Europe

Offices8 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Cultural Events and Ticketing: Onassis Stegi generates revenue through ticket sales for theatrical productions, dance performances, exhibitions, concerts, and other cultural events. Tickets are sold online, via phone, and at box office with tiered pricing (Zones A, B, C) and various discounts.
2. Onassis Friends Membership: Friends program offers benefits including priority booking, 20-30% discounts on tickets, pre-access to performances, and backstage tours. Membership is free with no annual fee, generating loyalty and repeat ticket purchases.
3. Donations and Philanthropy: As a public benefit foundation established by Aristotle Onassis in 1975, the Foundation operates through endowment income, donations, and strategic philanthropy in health, education, and culture.
4. Restaurant Operations (AMPHIBIAN): The Amphibian Restaurant at Onassis Stegi operates as transitional gastronomy, likely generating F&B revenue from visitors to performances and events.

Pricing tiers

Go-to-market motion1 record

Distribution channels7 records

Marketing channels9 records

Core offering

The Onassis Foundation is a public benefit foundation that delivers cultural programming, educational scholarships, and public healthcare through its main venue Onassis Stegi in Athens, the Onassis Hospital, Onassis Public Schools, and digital platforms including Onassis Channel, STEGI.RADIO, and ONX Studio. It produces and hosts theatrical, dance, and musical performances, funds scholarships for Greek and international students, operates cardiac surgery and transplant centers donated to the Greek state, and supports extended reality and digital art initiatives with hubs in New York and Athens.

Product overview

The Onassis Foundation is a public benefit cultural foundation established in 1975 by Aristotle Onassis. The Foundation operates as a multi-initiative organization with its central hub at Onassis Stegi in Athens, which serves as the main venue for theatrical and dance performances, art exhibits, and cultural events. The Foundation's digital presence includes Onassis Channel (YouTube), STEGI.RADIO (24/7 streaming), and Onassis My Account (unified membership platform). The Foundation supports digital innovation through Onassis ONX (extended reality platform with hubs in New York and Athens), educational initiatives through Onassis Public Schools and Onassis Library, healthcare through Onassis Hospital, and artistic residencies through Onassis AiR. Key programs include Live from Mount Olympus (podcast series), STAGES A/LIVE (touring productions), scholarships, and the Cavafy Archive.

Differentiator

Problem solved

Functional benefit

Brands

• ONX Studio (Onassis eXtended realities): Global platform for new media art and digital experiences using AI, VR, spatial computing, and born-digital media
• Stegi.Radio
• Onassis Channel
• Onassis AiR
• STAGES A/LIVE
• Live From Mount Olympus
• Onassis Culture at Cannes
• Onassis FAST FORWARD FESTIVAL
• Onassis Public Schools

Products and services

• Onassis Stegi The main cultural venue of the Onassis Foundation in Athens at 107-109 Syngrou Avenue, hosting theatrical and dance performances, art exhibits, conversations, lectures, and a wide range of cultural events. It has hosted more than 15,000 performances since opening.
• Onassis Channel

Quantifiable outcome

• 55,793 heart interventions performed at Onassis Cardiac Surgery Center
• +5 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

29 partnerships are on record, tiered core, major and minor.

• Ultima Oslo Contemporary Music FestivalcoreStrategic or Co-development Partner · 1 January 2021Coordinated 'Transmissions University Exchange program' connecting Norwegian and Greek music students. Project supported by EEA Grants and Norwegian Financial Mechanisms 2014-2021.
• New Museum (NEW INC)coreStrategic or Co-development Partner · 1 January 2020ONX Studio launched as a joint initiative between Onassis USA and New Museum's NEW INC in autumn 2020, serving as accelerator, subsidized workspace, and exhibition gallery at Olympic Tower, Midtown Manhattan.
• Brooklyn Academy of Music (BAM)coreStrategic or Co-development PartnerOnassis USA collaborates with BAM for cultural programming including 'Bark of Millions' by Taylor Mac production. BAM is one of the most important cultural organizations in New York.
• New York Public LibrarycoreStrategic or Co-development PartnerCultural collaboration for promotion of Greek culture to US audiences through library programming and resources.
• Pioneer WorksmajorStrategic or Co-development PartnerTechnology and arts organization collaborator for cultural innovation projects in New York.
• Public TheatermajorStrategic or Co-development PartnerMajor New York cultural institution collaborating on Greek cultural programming and productions.
• National SawdustmajorStrategic or Co-development PartnerBrooklyn music venue and cultural organization collaborating on Greek music and cultural exchange programs.
• St. Ann's WarehousemajorStrategic or Co-development PartnerBrooklyn theater venue collaborating on theatrical productions and cultural programming.
• Nokia Bell LabsmajorStrategic or Co-development PartnerCo-commissioned 'Secret Garden' by Stephanie Dinkins. Through Experiments in Art and Technology (E.A.T.) residency program, engages NEW INC alumni and Nokia Bell Labs researchers for year-long collaborations.
• Sundance Film Festival (New Frontier)coreStrategic or Co-development PartnerONX Studio projects including 'Secret Garden' by Stephanie Dinkins presented at Sundance New Frontier 2021, premiering extended reality artwork.
• Tribeca Film FestivalcoreStrategic or Co-development PartnerONX Studio inaugural showcase presented at Tribeca Film Festival 2021. Ongoing collaboration for XR project presentations.
• Venice International Film Festival (La Biennale)coreStrategic or Co-development PartnerONX Studio projects selected for Venice Immersive section, showcasing extended reality works at prestigious international festival.
• NYUmajorTechnology or IntegrationAcademic partnership for ONX Studio digital innovation initiatives and creative technology research.
• Games for ChangemajorStrategic or Co-development PartnerPartnership for games and immersive storytelling projects through ONX Studio programming.
• RhizomemajorStrategic or Co-development PartnerDigital art organization partnership for ONX Studio extended reality and born-digital media projects.
• IDFA (International Documentary Film Festival Amsterdam)majorStrategic or Co-development PartnerGlobal institution partnership for documentary and digital storytelling projects.
• CPH:DOX (Copenhagen International Documentary Film Festival)majorStrategic or Co-development PartnerGlobal institution partnership for documentary and digital media projects.
• DiMODAminorStrategic or Co-development PartnerDigital media and immersive experience organization partnership for ONX Studio programming.
• University of Oslo (Department of Musicology)majorStrategic or Co-development PartnerPartner university in Transmissions program - 6 students collaborated with Athens counterparts on musical compositions.
• National and Kapodistrian University of Athens (Department of Music Studies)majorStrategic or Co-development PartnerPartner university in Transmissions program - 6 students collaborated with Oslo counterparts on musical compositions.
• The New School for Social ResearchmajorStrategic or Co-development PartnerFellowship program for philosophy graduate students to study ancient Greek thought at New School in New York.
• Palazzo GrassimajorStrategic or Co-development Partner'Archive of Desire' festival for C.P. Cavafy presented at Palazzo Grassi in Venice, expanding cultural programming internationally.
• Pomegranate ArtsmajorStrategic or Co-development PartnerPresented 'Bark of Millions' by Taylor Mac in collaboration with BAM and Pomegranate Arts.
• Hellenic Foundation for CulturecoreStrategic or Co-development PartnerCollaborated on restoration of Cavafy's House in Alexandria, transforming it into an international landmark.
• Hellenic Ministry of Education, Religious Affairs, and SportscoreStrategic or Co-development PartnerCollaboration on Onassis Public Schools initiative - 22 public secondary schools receiving 160 million euro donation in areas facing social and economic challenges.
• Hellenic Ministry of Culture and SportscoreStrategic or Co-development PartnerCollaboration on Acropolis accessibility improvements for persons who are blind or have low vision; infrastructure improvements; Cavafy House restoration.
• Lighthouse for the Blind of GreecemajorStrategic or Co-development PartnerCollaboration on Acropolis accessibility for persons who are blind or have low vision.
• City of AthenscoreStrategic or Co-development PartnerCollaboration on new lighting in Dionysiou Areopagitou Street; Cavafy sculpture gift; various urban cultural initiatives.
• Greek Data Protection AuthorityminorOthersRegulatory body for data protection compliance under GDPR.

Scale indicators14 records

Recent moves4 records

Expansion highlights6 records

Broad incumbents

• Aga Khan Foundation: Long-established international development foundation operating across health, education, and culture with global geographic reach and large capital projects. Comparable in operating model (multi-pillar, multi-region, donor-driven) though with a more explicit development mandate.
• Wellcome Trust: UK-based charitable foundation supporting science, health, and cultural engagement at global scale. Comparable endowment size, international footprint, and integration of cultural programming with health/research themes, though with a heavier orientation toward biomedical research.
• Rockefeller Foundation: Historic US philanthropic foundation with global health, education, and cultural programming at international scale. Comparable multi-pillar model and use of large-scale capital commitments (like the Onassis Hospital and Public Schools) to seed systemic impact.
• Bloomberg Philanthropies: Global philanthropic foundation with extensive programming in arts, education, public health, and the environment. Comparable multi-pillar international operating model and willingness to take large capital commitments in city-level cultural and health infrastructure.
• Andrew W. Mellon Foundation: Largest US arts-focused philanthropy with deep grantmaking in performing arts, museums, higher education, and humanities. Directly comparable arts-and-culture grantmaking model, particularly relevant for Onassis Stegi, Cavafy Archive, and ONX Studio programming.
• Ford Foundation: One of the largest US-based international grantmaking foundations supporting education, arts, and social justice globally. Directly comparable grantmaking scale, international operating footprint, and engagement with arts and culture programming.

Direct peers

• J. Paul Getty Trust: US-based art-focused foundation operating the Getty Museum, Getty Research Institute, and grantmaking programs. Directly comparable as a legacy-named foundation that combines direct operation of major cultural institutions with international grantmaking in arts and education.
• Stavros Niarchos Foundation: Greece-based, family-founded public benefit foundation with a very similar three-pillar model (arts/culture, health, education) and global grantmaking reach. Most directly comparable peer given parallel Greek shipping-family origin, multi-decade scale, and large capital projects including the Stavros Niarchos Foundation Cultural Center in Athens.
• Calouste Gulbenkian Foundation: Portuguese-registered international foundation established by an oil magnate (Calouste Gulbenkian) that operates a major cultural center, museum, library, and grantmaking programs across arts, education, and science. Closely mirrors Onassis's blend of a founder's legacy, multi-pillar international giving, and direct operation of a flagship cultural venue.

Regional players

• Koç Foundation: Major Turkish family foundation supporting education, health, and culture at national scale, with operating cultural venues and hospital partnerships. Strong regional peer for the cultural/health/education three-pillar model, though focused primarily on Turkey rather than international.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/OnassisStegi
• YouTubeyoutube.com/@OnassisFoundationChannel
• Facebookfacebook.com/OnassisFoundation
• Instagraminstagram.com/onassisusa

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ONASSIS FOUNDATION