Sándor Wladár (born 19 July 1963 in Budapest) is a Hungarian retired male swimmer.

He won the gold medal at the 1980 Summer Olympics in Moscow in 200 m backstroke.

He was named the Male European Swimmer of the Year in 1981 by Swimming World magazine.

After retiring from active sport he opened a veterinarian clinic with his brother Zoltán who was also a swimmer.

[1] Wladár was elected president of the Hungarian Swimming Association (MÚSZ) on 24 September 2017.