大满贯在网球运动中是指一位网球选手能在所有大满贯赛事中均夺冠，包含以下四项：

上述四项赛事通常又称为「大满贯系列赛」。无论是从赛事的规模、历史、奖金、积分、签数和影响力来说，大满贯系列赛都堪称是职业网坛最重要的赛事，连奥运金牌都远不能与之相提并论。所以，夺得大满贯赛事的冠军头衔，对每个职业网球选手来说都是最终的梦想，即使得到任何一座，都已是至高无上的荣耀。

若能更进一步，在四大满贯赛事中均夺冠，即可称为「大满贯」：尤其如果是同一年之内实现的，更称为「真正的大满贯」或「年度大满贯」；不同年份前后累计实现的则称为「生涯大满贯」；还有一种较为特殊、介于年度大满贯与生涯大满贯之间的「跨年度大满贯」，指的是跨年度地在连续四项大满贯赛事均夺冠。

The Grand Slam tournaments, also called majors, are the four most important annual tennis events. They offer the most ranking points, prize money, public and media attention, the greatest strength and size of field, and greater number of "best of" sets for men. The Grand Slam itinerary consists of the Australian Open in mid January, the French Open in May and June, Wimbledon in June and July, and the US Open in August and September. Each tournament is played over a period of two weeks. The Australian and United States tournaments are played on hard courts, the French on clay, and Wimbledon on grass. Wimbledon is the oldest, founded in 1877, followed by the US in 1881, the French in 1891, and the Australian in 1905. However, of these four, only Wimbledon was a major before 1924/25, the time when all four became designated Grand Slam tournaments.