Florian Mayer, German tennis player
Florian Mayer (German pronunciation: [ˈfloːʁi̯aːn ˈmaɪ̯ɐ]; born 5 October 1983) is a German retired professional tennis player.

Mayer reached his career-high singles ranking of world No. 18 in June 2011. Also in 2011, Mayer won his first ATP title after four previous defeats in ATP finals.

Mayer competed at the 2004 Summer Olympics. At the 2004 Wimbledon Championships, Mayer reached the quarter-finals, which is his best Grand Slam result to date. He received the ATP Newcomer of the Year award in 2004. Eight years later, Mayer made his second Grand Slam quarter-final, once again at Wimbledon.

The biggest win of his career came at the 2011 Shanghai Rolex Masters when he upset twenty-time Grand Slam champion Rafael Nadal in the round of 16.

Mayer was known for his unorthodox style of play. He had a long backswing on his forehand and backhand and used many different slices and spin on his backhand side. He was also known for his jumping backhand dropshots which caught many of his opponents on the backfoot.

Mayer retired from professional tennis after the 2018 US Open.