The 1985 ABN World Tennis Tournament was a men's tennis tournament played on indoor carpet courts at Rotterdam Ahoy in the Netherlands. It was part of the 1985 Nabisco Grand Prix. The tournament was held from 18 March through 24 March 1985. Unseeded Miloslav Mečíř won the singles title.
| width=130 bgcolor=dfe2e9 | Event | width=80 bgcolor=lime | W | width=85 bgcolor=thistle | F | width=85 bgcolor=ffff00 | SF | width=85 bgcolor=ffebcd | QF | width=85 bgcolor=afeeee | Round of 16 | width=85 bgcolor=afeeee | Round of 32 |
| style=background:#f3f3f3 | Singles | $50,000 | $25,000 | $13,250 | $7,125 | $3,875 | $2,125 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style=background:#f3f3f3 | Doubles* | $15,000 | $7,500 | $4,150 | $2,600 | $1,725 |
See main article: 1985 ABN World Tennis Tournament – Singles. Miloslav Mečíř defeated Jakob Hlasek 6–1, 6–2
Pavel Složil / Tomáš Šmíd defeated 
Vitas Gerulaitis / 
Paul McNamee 6–4, 6–4