Antonio Abertondo (August 1, 1918 – July 6, 1978) was an Argentine long-distance swimmer.

He was the first person to complete a two way swim of the English Channel.

He completed the swim on 21 September 1961 in 43 hours 10 minutes, with just a 4-minute rest in France.

He also swam the English Channel on three other occasions, in 1950, 1951 and 1954.

This biographical article related to an Argentine swimmer is a stub.