The 2001 CA-TennisTrophy was a men's tennis tournament played on indoor hard courts at the Wiener Stadthalle in Vienna, Austria, and was part of the International Series Gold of the 2001 ATP Tour. It was the 27th edition and took place from 8 October through 14 October 2001. Sixth-seeded Tommy Haas won the singles title.
See main article: 2001 CA-TennisTrophy – Singles. Tommy Haas defeated Guillermo Cañas 6–2, 7–6(8–6), 6–4
See main article: 2001 CA-TennisTrophy – Doubles. Martin Damm / Radek Štěpánek defeated Jiří Novák / David Rikl 6–3, 6–2