Competitions in the sport of surfing, governed by the International Surfing Association (ISA), have been held at two editions of the Summer Olympic Games. First selected as one of the discretionary sports at the 2020 and 2024 games, surfing will be inducted as one of the mandatory sports at the 2028 games. Athletes compete in the discipline of shortboard surfing, which is the sole event in the sport at the Olympics. The United States have won the most gold medals, while Brazil have won the most medals overall.
Tennis was part of the Summer Olympic Games program from the inaugural 1896 Summer Olympics, but was dropped after the 1924 Summer Olympics due to disputes between the International Lawn Tennis Federation and the International Olympic Committee over how to define amateur players. After two appearances as a demonstration sport in 1968 and 1984. it returned as a full medal sport at the 1988 Summer Olympics open for all players regardless of their age and status and has been played at every summer Games since then.
Fencing has been contested at every Summer Olympic Games since the birth of the modern Olympic movement at the 1896 Summer Olympics in Athens.