Honorary membership is conferred to members who have had a significant contribution in the development and progress of the Orchid Society.
| 1985 | Ms. Axelle Lamusse | 2010 | Mr. Paul Jauffret |
| 1985 | Dr. Majeed Khadaroo – O.S.K. | 2010 | Dr. Claude Ricaud, C.B.E. |
| 1985 | Dr. Philip Teckham | 2010 | Mr. Gerard Bax |
| 1985 | Dr. France Staub | 2010 | Mr. Allan Puresh |
| 1985 | Mr. Jean Brouard | 2020 | Mr. Antoine Grenouille |
| 1985 | Mr Sattardeo Dabee, M.B.E. | 2020 | Mrs. Amrita Vayid |
| 2010 | Mr Serge L’Ecluse | 2020 | Mrs. Chantal Chung Hung Tseung |
| 2010 | Mr Francis Montocchio | 2020 | Dr. Agness Chakowa |