| Name | Membership No. | Grade | Branch |
|---|---|---|---|
| Olufolahan Olumide | SE 0147 | Member | Lagos |
| Alade Ajibola Olumuyiwa | SE 0518 | Fellow | Ibadan |
| Adewale Linus Olunloyo | SE 0832 | Member | Lagos |
| Francis Ajiboye Oluokun | SE 0148 | Member | Ibadan |
| Gabriel I Oluonye | SE 0022 | Fellow | Benin |
| Olusolabomi C. Olusanya | SE 0434 | Member | Lagos |
| M A Oluseye | SE 0207 | Member | – |
| Mathew O. Oluwole | SE 0058 | Member | Lagos |
| Oludayo O. Oluyemi | SE 0357 | Fellow | Lagos |
| Ismaila Aliyu Omadibi | SE 0708 | Member | Kaduna |
| Daniel Shaibu Omale | SE 0067 | Member | Kaduna |
| Anthony W.O Omatsone | SE 0104 | Fellow | – |
| Anya Njoku Omerekpe | SE 0269 | Member | Lagos |
| Benjamin Oritsejolomi Ometan | SE 0155 | Fellow | Lagos |
| Francis Afolabi Omiata | SE 0172 | Member | Lagos |
| Chief Ezekiel Iyiola Omisore | SE 0036 | Fellow | Lagos |
| Oluwatoyin Yesirat Omisore | SE 0628 | Member | Lagos |
| Obafemi O Omokungbe | SE 0593 | Fellow | Lagos |
| Samuel Omole | SE 0149 | Member | – |
| Victor Olufemi Omole | SE 0173 | Fellow | Ibadan |
| Olaniyan Omotosho | SE 0087 | Fellow | Lagos |
| Gbolahan Oladapo Onaeko | SE 0208 | Fellow | Lagos |
| Olakunle Onajin | SE 0270 | Fellow | – |
| Adisa Musa Oni | SE 0326 | Member | – |
| Deborah Metibaye Oni | SE 0658 | Fellow | Abuja |