| 1991 Kolynos Cup | ||||
|---|---|---|---|---|
| Date | 28 October–3 November | |||
| Edition | 1st | |||
| Category | ATP World Series | |||
| Draw | 32S / 16D | |||
| Prize money | $ 147,500 | |||
| Surface | Hard / outdoor | |||
| Location | Búzios, Brazil | |||
| Champions | ||||
| Singles | ||||
 Jordi Arrese | ||||
| Doubles | ||||
| Sergio Casal / Emilio Sánchez | ||||
| ||||
The 1991 Kolynos Cup, also known as the Búzios Open, was a men's tennis tournament held in Búzios, Brazil and played on outdoor hardcourt. It was part of the World Series category of the 1991 ATP Tour. It was the inaugural edition of the tournament and took place from 28 October through 3 November 1991. Second-seeded Jordi Arrese won the singles title.
Finals
Singles
Jordi Arrese defeated 
Jaime Oncins 1–6, 6–4, 6–0
- It was Arrese's 2nd singles title of the year and the 4th of his career.
Doubles
Sergio Casal / Emilio Sánchez defeated 
Javier Frana / 
Leonardo Lavalle 4–6, 6–3, 6–4
- It was Casal's 4th doubles title of the year and the 35th of his career. It was Sánchez' 5th title of the year and the 38th of his career.
References
- "1991 Guaraja – Singles draw". Association of Tennis Professionals (ATP).
- "1991 Guaraja – Doubles draw". Association of Tennis Professionals (ATP).
- John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 119, 141. ISBN 9780002184304.