This page covers the most important events in the sport of tennis in 1988. It provides the results of notable tournaments throughout the year on both the ATP and WTA Tours, the Davis Cup, and the Fed Cup.

Category	Tournament	Champions	Finalists	Score
Men's singles[1]	Australian Open	Mats Wilander	Pat Cash	6–3, 6–7(3–7), 3–6, 6–1, 8–6
	French Open	Mats Wilander	Henri Leconte	7–5, 6–2, 6–1
	Wimbledon	Stefan Edberg	Boris Becker	4–6, 7–6(7–2), 6–4, 6–2
	US Open	Mats Wilander	Ivan Lendl	6–4, 4–6, 6–3, 5–7, 6–4

Category	Tournament	Champions	Finalists	Score
Women's singles[2]	Australian Open	Steffi Graf	Chris Evert	6–1, 7–6(7–3)
	French Open	Steffi Graf	Natasha Zvereva	6–0, 6–0
	Wimbledon	Steffi Graf	Martina Navratilova	5–7, 6–2, 6–1
	US Open	Steffi Graf	Gabriela Sabatini	6–3, 3–6, 6–1

Category	Championship	Champions	Finalists	Score
Men's doubles[3]	Australian Open	Rick Leach Jim Pugh	Jeremy Bates Peter Lundgren	6–3, 6–2, 6–3
	French Open	Andrés Gómez Emilio Sánchez	John Fitzgerald Anders Järryd	6–3, 6–7, 6–4, 6–3
	Wimbledon	Ken Flach Robert Seguso	John Fitzgerald Anders Järryd	6–4, 2–6, 6–4, 7–6(7–3)
	US Open	Sergio Casal Emilio Sánchez	Rick Leach Jim Pugh	walkover

Category	Championship	Champions	Finalists	Score
Women's doubles[4]	Australian Open	Martina Navratilova Pam Shriver	Chris Evert Wendy Turnbull	6–0, 7–5
	French Open	Martina Navratilova Pam Shriver	Claudia Kohde-Kilsch Helena Suková	6–2, 7–5
	Wimbledon	Steffi Graf Gabriela Sabatini	Larisa Savchenko Natasha Zvereva	6–3, 1–6, 12–10
	US Open	Gigi Fernández Robin White	Patty Fendick Jill Hetherington	6–4, 6–1

Category	Championship	Champions	Finalists	Score
Mixed doubles[5]	Australian Open	Jana Novotná Jim Pugh	Martina Navratilova Tim Gullikson	5–7, 6–2, 6–4
	French Open	Lori McNeil Jorge Lozano	Brenda Schultz Michiel Schapers	7–5, 6–2
	Wimbledon	Zina Garrison Sherwood Stewart	Gretchen Magers Kelly Jones	6–1, 7–6(7–3)
	US Open	Jana Novotná Jim Pugh	Elizabeth Smylie Patrick McEnroe	7–5, 6–3

• 24 July – 1 August 2021: Summer Olympics^[6]

Category	Gold medalist	Silver medalist	Bronze medalists	Score in final
Men's singles	Miloslav Mečíř	Tim Mayotte	Stefan Edberg Brad Gilbert	3–6, 6–2, 6–4, 6–2
Women's singles	Steffi Graf	Gabriela Sabatini	Zina Garrison Manuela Maleeva	6–3, 6–3
Men's doubles	Ken Flach Robert Seguso	Sergio Casal Emilio Sánchez	Miloslav Mečíř Milan Šrejber Stefan Edberg Anders Järryd	6–3, 6–4, 6–7(5–7), 6–7(1–7), 9–7
Women's doubles	Zina Garrison Pam Shriver	Jana Novotná Helena Suková	Elizabeth Smylie Wendy Turnbull Steffi Graf Claudia Kohde-Kilsch	4–6, 6–2, 10–8

• Official website of the Association of Tennis Professionals (ATP)
• Official website of the Women's Tennis Association (WTA)
• Official website of the International Tennis Federation (ITF)
• Official website of the International Team Competition in Men's Tennis (Davis Cup)
• Official website of the International Team Competition in Women's Tennis (Fed Cup)