Markus Günthardt (born 10 September 1957) is a Swiss former tennis player. Günthardt won three doubles titles during his professional career. The right-hander reached his highest ATP doubles ranking on 17 September 1984, when he became the number 44 in the world.
Günthardt participated in 14 Davis Cup ties for Switzerland from 1980 to 1986, posting a 9-5 record in doubles.
Günthardt's younger brother Heinz was a successful doubles player, winning two Grand Slam doubles titles in his career.
Career finals Doubles: 8 (3 titles / 5 runner-ups) ResultW-L DateTournamentSurfacePartnerOpponentsScoreWin 1–0 Jul 1980 Båstad, Sweden Clay Heinz Günthardt John Feaver Peter McNamara 6–4, 6–4Loss 1–1 Sep 1980 Geneva, Switzerland Clay Heinz Günthardt Željko Franulović Balázs Taróczy 4–6, 6–4, 4–6Win 2–1 Jul 1981 Gstaad, Switzerland Clay Heinz Günthardt David Carter Paul Kronk 6–4, 6–1Loss 2–2 Oct 1981 Basel, Switzerland Hard (i) Pavel Složil José Luis Clerc Ilie Năstase 6–7, 7–6, 6–7Loss 2–3 Feb 1982 Cairo, Egypt Clay Heinz Günthardt Drew Gitlin Jim Gurfein 4–6, 5–7Loss 2–4 Jul 1982 Gstaad, Switzerland Clay Heinz Günthardt Sandy Mayer Ferdi Taygan 2–6, 3–6Loss 2–5 May 1983 Madrid, Spain Clay Zoltán Kuhárszky Heinz Günthardt Pavel Složil 3–6, 3–6Win 3–5 Jul 1984 Gstaad, Switzerland Clay Heinz Günthardt Givaldo Barbosa João Soares 6–4, 3–6, 7–6
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