2001 CA-TennisTrophy
Date	8–14 October
Edition	27th
Category	International Series Gold
Draw	32S / 16D
Prize money	$700,000
Surface	Hard / indoor
Location	Vienna, Austria
Venue	Wiener Stadthalle
Champions
Singles
Tommy Haas[1]
Doubles
Martin Damm / Radek Štěpánek[2]
← 2000 · Vienna Open · 2002 →

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.

Finals

Singles

Tommy Haas defeated Guillermo Cañas 6–2, 7–6^(8–6), 6–4

• It was Haas' 3rd title of the year and the 4th of his career.

Doubles

Martin Damm / Radek Štěpánek defeated Jiří Novák / David Rikl 6–3, 6–2

• It was Damm's 2nd title of the year and the 20th of his career. It was Štěpánek's 3rd title of the year and the 4th of his career.