4x100m Relay

4x100m Relay may refer to:
 * 4x100m Relay, an Event in the Wii version of Mario & Sonic at the Olympic Games.
 * 4x100m Relay, an Event in the Wii version of Mario & Sonic at the London 2012 Olympic Games.
 * 4x100m Relay, an Event in the Nintendo 3DS version of Mario & Sonic at the London 2012 Olympic Games.
 * 4x100m Relay, an Event in the Wii U version of Mario & Sonic at the Rio 2016 Olympic Games.
 * 4x100m Relay, an Event in ''Mario & Sonic at the Rio 2016 Olympic Games Arcade Edition.
 * 4x100m Freestyle, another Event in the Wii version of Mario & Sonic at the Olympic Games.