| Sub A | M/F | Surname | Firstname | Married Surname | e-mail | Phone & Fax | Address |
| 55 | F | Oberholzer | Madeleine | | | | |
| 34 | F | O'Brien | Helena Ada (Len) | Watts | rwatts333 AT aol DOT com | 011 969-4060 | Cottage No 108, Rynpark 5, Parker Street, Rynfield, Benoni. 1514 |
| 36 | F | O'Brien | Patricia (Paddy) | Beeforth | rwatts333 AT aol DOT com | 011 969-1003 | Cottage No 9, Rynpark 5, Parker Street, Rynfield, Benoni. 1514 |
| 38 | F | O'Brien | Thomas | | | | Harare, Zimbabwe |
| 53 | M | O'Connor | Mike | | thedoorstore AT absamail DOT co.za | 021 438-2427 447-2278(w) | 4 Comrie Road, Camps Bay. 8005 |
| 61 | M | O'Connor | Patrick | | | | |
| 50 | F | Oettle | Belinda | | | | |
| 45 | F | Oettle | Helen | Wintle | | 021 552-1582 | 10 Pienaar Rd, Milnerton. 7441 |
| 44 | M | Oettle | Karl | | | | |
| 55 | M | Okill | Clive | | cliveo AT onetel DOT com | +44 1237 472775, 07876742150 (Mobile) | 9 Rickards Green, Abbotsham, Devon. EX39 5BB, England |
| 57 | F | Okill | Colleen | Orme | | | 13 Jill Road, Tableview. 7441 |
| 45 | M | Okkenburg | Albert | | | 021 919-2560, 082-377-3393 | 84 Panorama Ave, Stellenberg. 7550 |
| 60 | M | Oliver | Douglas | | | | |
| 61 | F | Oliver | Jean | | | | |
| 10 | F | O'Moloney | Sheila | Brown | | | |
| 10 | M | O'Moloney | Tim, Dr. | | | | |
| 56 | F | Orme | Victoria | | | | |