The 2001 Hamburg Masters was a men's tennis tournament played on outdoor clay courts. It was the 95th edition of the Hamburg Masters and was part of the Tennis Masters Series of the 2001 ATP Tour. It took place at the Am Rothenbaum in Hamburg in Germany from 14 May through 20 May 2001. The men's field was headlined by ATP No. 1, Buenos Aires, Acapulco, Monte Carlo and Hamburg defending champion Gustavo Kuerten, Paris and US Open champion and Dubai runner-up Marat Safin, and Australian Open, Indian Wells and Miami champion and San Jose runner-up Andre Agassi. Other top seeds competing were Wimbledon defending champion Pete Sampras, Sydney and Scottsdale finalist Magnus Norman, Yevgeny Kafelnikov, Lleyton Hewitt and Juan Carlos Ferrero.

Finals

Singles

🇪🇸 Albert Portas defeated 🇪🇸 Juan Carlos Ferrero 4–6, 6–2, 0–6, 7–6(7–5), 7–5

Doubles

🇸🇪 Jonas Björkman / 🇦🇺 Todd Woodbridge defeated 🇨🇦 Daniel Nestor / 🇦🇺 Sandon Stolle 7–6(7–2), 3–6, 6–3