2011 Rakuten Japan Open Tennis Championships
Date	3–9 October
Edition	38th
Category	ATP World Tour 500
Surface	Hard / outdoor
Location	Tokyo, Japan
Venue	Ariake Coliseum
Champions
Singles
Andy Murray[1]
Doubles
Andy Murray / Jamie Murray[2]
← 2010 · Japan Open · 2012 →

The 2011 Rakuten Japan Open Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 38th edition of the event known that year as the Rakuten Japan Open Tennis Championships, and was part of the 500 Series of the 2011 ATP World Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from 3 October through 9 October 2011. Andy Murray won both the singles and doubles titles, the latter with his brother Jamie.

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
ESP	Rafael Nadal	2	1
GBR	Andy Murray	4	2
ESP	David Ferrer	5	3
USA	Mardy Fish	8	4
SRB	Viktor Troicki	15	5
SRB	Janko Tipsarević	17	6
CZE	Radek Štěpánek	24	7
ARG	Juan Mónaco	27	8

• Rankings are based on the rankings of September 26, 2011.

Other entrants

The following players received wildcards into the singles main draw:

• Tatsuma Ito
• Go Soeda
• Yūichi Sugita

The following players received entry from the qualifying draw:

• Marco Chiudinelli
• Matthew Ebden
• Ryan Harrison
• Dudi Sela

Finals

Singles

Andy Murray defeated Rafael Nadal, 3–6, 6–2, 6–0

• It was Murray's 4th title of the year and 20th of his career.

Doubles

Andy Murray / Jamie Murray defeated František Čermák / Filip Polášek, 6–1, 6–4