Michael Mortensen (born 12 March 1961) is a former professional tennis player from Denmark.
Mortensen achieved a career-high doubles ranking of world No. 34 in 1988 and a career-high singles ranking of world No. 301 in 1984. He won five ATP doubles titles.
Mortensen participated in 22 Davis Cup ties for Denmark from 1979 to 1990, posting an 11–13 record in doubles and a 12–14 record in singles.
Mortensen later became a coach. He was the captain of the Denmark Fed Cup team in 2011 competing for 2011 Fed Cup Europe/Africa Zone Group I. Among players he coached was the WTA top-5 player and Chinese No. 1 Li Na, who won the 2011 French Open Women's Singles title under Mortensen.
Career finals
Doubles: 12 (5 titles, 7 runner-ups)
| Result | W-L | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Win | 1–0 | Apr 1984 | Nice, France | Clay | Jan Gunnarsson | Hans Gildemeister Andrés Gómez |
6–1, 7–5 |
| Win | 2–0 | Jul 1984 | Båstad, Sweden | Clay | Jan Gunnarsson | Juan Avendaño Fernando Roese |
6–0, 6–0 |
| Win | 3–0 | Sep 1984 | Geneva, Switzerland | Clay | Mats Wilander | Libor Pimek Tomáš Šmíd |
6–1, 3–6, 7–5 |
| Win | 4–0 | Nov 1984 | Toulouse, France | Hard (i) | Jan Gunnarsson | Pavel Složil Tim Wilkison |
6–4, 6–2 |
| Loss | 4–1 | Sep 1985 | Barcelona, Spain | Clay | Jan Gunnarsson | Sergio Casal Emilio Sánchez |
3–6, 3–6 |
| Loss | 4–2 | Apr 1987 | Monte Carlo, Monaco | Clay | Mansour Bahrami | Hans Gildemeister Andrés Gómez |
2–6, 4–6 |
| Loss | 4–3 | Feb 1988 | Lyon, France | Carpet (i) | Blaine Willenborg | Brad Drewett Broderick Dyke |
6–3, 3–6, 4–6 |
| Loss | 4–4 | Jul 1988 | Stuttgart Outdoor, Germany | Clay | Anders Järryd | Sergio Casal Emilio Sánchez |
6–4, 3–6, 4–6 |
| Loss | 4–5 | Aug 1988 | Rye Brook, United States | Hard | Jeremy Bates | Andrew Castle Tim Wilkison |
6–4, 5–7, 6–7 |
| Win | 5–5 | Feb 1989 | Lyon, France | Carpet (i) | Eric Jelen | Jakob Hlasek John McEnroe |
6–2, 3–6, 6–3 |
| Loss | 5–6 | Feb 1990 | Stuttgart Indoor, Germany | Carpet (i) | Tom Nijssen | Jakob Hlasek Guy Forget |
3–6, 2–6 |
| Loss | 5–7 | Oct 1990 | Toulouse, France | Hard (i) | Michiel Schapers | Neil Broad Gary Muller |
6–7, 4–6 |
