Karl Thomas Conny Johansson (; born 24 March 1975) is a Swedish retired professional tennis player and coach. He reached a career-high Association of Tennis Professionals (ATP) world No. 7 singles ranking on 10 May 2002. His career highlights in singles include a Grand Slam title at the Australian Open in 2002, and an ATP Masters Series title at the 1999 Canada Masters. He also won a silver medal at the 2008 Summer Olympics in men's doubles, partnering Simon Aspelin.