| Season: | 1999–2000 |
| Nextseason: | 2000–01 |
The 1999–2000 Divizia C was the 44th season of Liga III, the third tier of the Romanian football league system.[1] [2]
Relegated from Divizia B
Promoted from Divizia D
Promoted to Divizia B
Relegated to Divizia D
Electro Apemin Borsec was renamed as Apemin Borsec.
Electro-Turris Turnu Măgurele was renamed as Turris Turnu Măgurele.
ASA Rapid Miercurea Ciuc was renamed as Rapid Miercurea Ciuc.
Parângul Lonea was renamed as Inter Petrila.
CSU Mecanica Sibiu was renamed as Universitatea Sibiu.
Conired PAS Pucioasa was renamed as Conired Pucioasa.
Vega Deva was renamed as Cetate Deva.
Sticla Arieșul Turda was renamed as Arieșul Turda.
Dorna Vatra Dornei took the place of Șomuzul Preutești. Subsequently was renamed as Pro Mobila Vatra Dornei.
Ozana Târgu Neamț ceded its place to newly formed Termoutilaj Piatra Neamț.
Unirea Botoșani merged with Fortus Iași, the first one being absorbed by the second one.
Jandarmii Dorobanțu ceded its place to Hondor Agigea.
Petrolul Roata de Jos ceded its place to Atletic București.
IOB Balș ceded its place to Flacăra Moreni.
Dinamo Segarcea merged with Internațional Calafat. The new entity was named as Dinamo Calafat.
Minerul Mătăsari, and Metalurgistul Cugir were spared from relegation.
Flacăra Horezu ceded its Divizia B place to newly formed Flacăra Râmnicu Vâlcea.
Minerul Berbești ceded its place to Flacăra Horezu, which was renamed as Minerul Horezu.