| Competition: | National First Division |
| Season: | 1998–99 |
| Winners: | Thembisa Classic (Inland) African Wanderers (Coastal) |
| Promoted: | Thembisa Classic, African Wanderers |
| Prevseason: | 1997–98 |
| Nextseason: | 1999–2000 |
The 1998–99 National First Division was the 3rd season of the second tier of South African soccer since the reorganisation in 1996.
It consisted of two streams, an Inland stream of 16 teams, and a Coastal stream of 14 teams, reduced from 20 teams apiece the previous season.[1] [2]
The Coastal stream was won by African Wanderers and the Inland stream by Thembisa Classic, with both earning promotion to the 1999–2000 Premier Soccer League.[3] [4]