The Manly Seaside Championships is an internationally recognised tennis tournament hosted annually by the Manly Lawn Tennis Club in Manly Australia.

The Manly Lawn Tennis Club is located in the heart of Manly, metres away from the iconic Manly Beach. Founded in 1884, Manly Lawn has and continues to be an integral part of tennis in Australia.

Aligned to the rich history of Manly Lawn, the Seaside is one of the oldest open tennis tournaments in the world having been played for more than 90 years. In that time, the Seaside has seen some of the games most recognisable figures come to Manly. Global icons like Rod Laver, Evonne Goolagong, Althea Gibson and Ken Rosewall have all won the Seaside.