The men's 50 metre backstroke event in swimming at the 2013 World Aquatics Championships took place on 3–4 August at the Palau Sant Jordi in Barcelona, Spain.

[1][2] Prior to this competition, the existing world and championship records were: The heats were held at 10:18.

[5] The semifinals were held at 19.15.

[6] The final was held at 18:02.

[7]