Michael Mortensen (born March 12, 1961, in Glostrup, Denmark), 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. Mortensen won five career 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 is currently the coach of WTA Top 4 Player and China No. 1 Li Na who won the 2011 French Open Women's Singles title.
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents in the final | Score in the final |
|---|---|---|---|---|---|---|---|
| Winner | 1. | 1984 | Nice, France | Clay | Jan Gunnarsson | Hans Gildemeister Andrés Gómez |
6–1, 7–5 |
| Winner | 2. | 1984 | Båstad, Sweden | Clay | Jan Gunnarsson | Juan Avendaño Fernando Roese |
6–0, 6–0 |
| Winner | 3. | 1984 | Geneva, Switzerland | Clay | Mats Wilander | Libor Pimek Tomáš Šmíd |
6–1, 3–6, 7–5 |
| Winner | 4. | 1984 | Toulouse, France | Hard (i) | Jan Gunnarsson | Pavel Složil Tim Wilkison |
6–4, 6–2 |
| Runner-up | 1. | 1985 | Barcelona, Spain | Clay | Jan Gunnarsson | Sergio Casal Emilio Sánchez |
3–6, 3–6 |
| Runner-up | 2. | 1987 | Monte Carlo, Monaco | Clay | Mansour Bahrami | Hans Gildemeister Andrés Gómez |
2–6, 4–6 |
| Runner-up | 3. | 1988 | Lyon, France | Carpet | Blaine Willenborg | Brad Drewett Broderick Dyke |
6–3, 3–6, 4–6 |
| Runner-up | 4. | 1988 | Stuttgart Outdoor, Germany | Clay | Anders Järryd | Sergio Casal Emilio Sánchez |
6–4, 3–6, 4–6 |
| Runner-up | 5. | 1988 | Rye Brook, U.S. | Hard | Jeremy Bates | Andrew Castle Tim Wilkison |
6–4, 5–7, 6–7 |
| Winner | 5. | 1989 | Lyon, France | Carpet | Eric Jelen | Jakob Hlasek John McEnroe |
6–2, 3–6, 6–3 |
| Runner-up | 6. | 1990 | Stuttgart Indoor, Germany | Carpet | Tom Nijssen | Jakob Hlasek Guy Forget |
3–6, 2–6 |
| Runner-up | 7. | 1990 | Toulouse, France | Hard (i) | Michiel Schapers | Neil Broad Gary Muller |
6–7, 4–6 |