1985 Buick WCT Finals
| 1985 Buick WCT Finals | |
|---|---|
| Date | April 8 – April 15 |
| Edition | 15th |
| Category | Grand Prix |
| Surface | Carpet / Indoor |
| Location | Dallas, TX, USA |
| Venue | Reunion Arena |
| Champions | |
| Singles | |
 Ivan Lendl | |
The 1985 Buick WCT Finals was a tennis tournament played on indoor carpet courts. It was the 15th edition of the WCT Finals and was part of the 1985 Nabisco Grand Prix, as the two organisations had reunited. It was played at the Reunion Arena in Dallas, Texas in the United States from April 8 through April 15, 1985.
Champions
Men's Singles
Ivan Lendl defeated 
Tim Mayotte 7–6, 6–4, 6–1
- It was Lendl's 3rd title of the year and the 48th of his career.