The 1981 Swiss Indoors was a men's tennis tournament played on indoor hard courts at the St. Jakobshalle in Basel, Switzerland that was part of the 1981 Volvo Grand Prix. It was the 13th edition of the tournament and was held from 12 October through 18 October 1981. First-seeded Ivan Lendl won the singles title.
Finals
Singles
Ivan Lendl defeated 
José Luis Clerc 6–2, 6–3, 6–0
- It was Lendl's 6th singles title of the year and the 13th of his career.
Doubles
Ilie Năstase / José Luis Clerc defeated 
Markus Günthardt / Pavel Složil 7–6, 6–7, 7–6
References
- ^ "1981 Basel – Singles draw". Association of Tennis Professionals (ATP).
- ^ "1981 Basel – Doubles draw". Association of Tennis Professionals (ATP).