Lukáš Dlouhý (born April 9, 1983 in Písek) is a professional Czech tennis player on the ATP Tour. A doubles specialist, Dlouhý reached a career-high ranking of World Number 5 on June 22, 2009.
Dlouhý has been part of two long-term doubles partnerships, first with countryman and coach Pavel Vízner and actively with Leander Paes, in which he has reached numerous grand slam finals with each. At the 2006 French Open, he reached the third round of the men's singles event and the semifinals of the men's doubles tournament with Vízner. In 2007, Dlouhý and Vízner reached two grand slam finals at the 2007 French Open and 2007 U.S. Open. In 2008, following Vízner's retirement.
The Czech Republic native teamed with Paes to capture two Grand Slam titles and qualify for Barclays ATP World Tour Finals in London where they went 0-3 in round robin play…In 16 tournaments together, they advanced to SF or better five times, highlighted by Grand Slam titles at 2009 French Open (d. Moodie-Norman) and 2009 U.S. Open (tennis) (d. Bhupathi-Knowles), both by identical 36 63 62 scores…It was first two Grand Slam titles for the Czech native and Paes has captured six in his career…They also were finalists in Rotterdam in February (l. to Nestor-Zimonjic) and SF at Australian Open (l. to eventual champs Bryans) and Monte Carlo* (l. to Bryans) in April…After US Open they did not play together again until Paris* (2nd RD) prior to London (Paes took time off to rest)…Finished No. 4 in ATP Team Rankings and No. 6 individually.