The 1985 WTA Swiss Open was a women's tennis tournament played on outdoor clay courts in Lugano, Switzerland that was part of the 1985 Virginia Slims World Championship Series. It was the ninth edition of the tournament and was held from 20 May through 26 May 1985. Third-seeded Bonnie Gadusek won the singles title.
|1985 WTA Swiss Open|
|Draw||48S / 24D|
|Surface||Clay / outdoor|
| Bonnie Gadusek |
Bonnie Gadusek defeated Manuela Maleeva 6–2, 6–2
- It was Gadusek's 2nd singles title of the year and the 3rd of her career.
Bonnie Gadusek / Helena Suková defeated Bettina Bunge / Eva Pfaff 6–2, 6–4
- ^ John Barrett, ed. (1986). The International Tennis Federation : World of Tennis 1986. London: Willow Books. pp. 196, 223. ISBN 9780002182096.