2021 FINA World Swimming Championships (25 m) – Women's 50 metre backstroke

The Women's 50 metre backstroke event at the 2021 FINA World Swimming Championships (25 m) was a short course (25-meter pool) swimming competition held as part of the broader championships. This specific event featured female athletes competing individually in a 50-metre backstroke race.

The competition typically consisted of preliminary heats, followed by semi-finals (depending on the number of participants), and culminating in a final race involving the fastest swimmers from the previous rounds. The swimmer with the fastest time in the final was declared the winner and awarded the gold medal. Silver and bronze medals were awarded to the second and third-fastest swimmers, respectively.

Key elements of the event included the start (from the starting blocks with a backstroke start), the underwater phase following the start and turns, the stroke technique employed by the swimmers, and the finish. The race was governed by FINA (Fédération Internationale de Natation) rules regarding stroke technique, turns, and disqualifications. Times were recorded electronically, and results were officially certified by FINA officials. The event contributed to the overall medal standings for participating nations at the championships.