| Africa Academy for Public Health | Related tax-exempt org | Research | — | — |
| American Repertory Theatre Company INC | Related tax-exempt org | Perform. Arts | MA | 042665867 |
| Associacao David Rockefeller Center DE U | Related tax-exempt org | Education | — | — |
| Blue Marble Holdings Corp | Related tax-exempt org | Invest. Manag | MA | 237014581 |
| Centre Recherche Europeen DE LA HBS | Related tax-exempt org | Research SUP. | — | — |
| Demeter Holdings Corporation | Related tax-exempt org | Invest. Manag | MA | 043044742 |
| Doyukai Fund for Harvard INC | Related tax-exempt org | Research SUP. | MA | 043478889 |
| Dubai Harvard Foundation for Medical RES | Related tax-exempt org | Edu & Res. | MA | 522446955 |
| Endowment for Research in Human Biology | Related tax-exempt org | Research | MA | 042702030 |
| Fundacion Centro DE Investigacion DE LA | Related tax-exempt org | Research SUP. | — | — |
| Fundacion Drclas Chile | Related tax-exempt org | FAC. & STU. | — | — |
| Hansjorg WYSS INST for Biologically INS | Related tax-exempt org | Research | MA | 300773387 |
| Harvard Business School Interactive INC | Related tax-exempt org | EXEC EDU | MA | 043395140 |
| Harvard Business School Publishing Corp | Related tax-exempt org | Publishing | MA | 043177990 |
| Harvard Dedicated Energy Limited | Related tax-exempt org | Electric PUR | MA | 030425512 |
| Harvard Global Research and Support SERV | Related tax-exempt org | Global SUP. | MA | 454535664 |
| Harvard Global Research and Support SERV | Related tax-exempt org | Research | — | — |
| Harvard Global Research Support Centre I | Related tax-exempt org | Research | — | — |
| Harvard Global Research Support Centre I | Related tax-exempt org | Research | — | — |
| Harvard Global Research Support Centre S | Related tax-exempt org | Research | — | — |
| Harvard Global UK | Related tax-exempt org | Research | — | — |
| Harvard Magazine INC | Related tax-exempt org | Publishing | MA | 046112308 |
| Harvard Management Company Inc | Related tax-exempt org | Invest. Manag | MA | 237361259 |
| Harvard Management Private Equity Corpor | Related tax-exempt org | Invest. Manag | MA | 043070522 |
| Harvard Medical Center | Related tax-exempt org | Medical educa | MA | 042213292 |