This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009)

Simone Thion de la Chaume (November 24, 1908 – September 4, 2001) was a champion French golfer. In 1924 she became the first foreign player to win the British Girls Amateur Golf Championship and in 1927 the first to win the British Ladies Amateur Golf Championship, the then most prestgious tournament in British and European ladies' golf and an event her daughter Catherine would also win forty-two years later.

At the 1927 United States Women's Amateur Golf Championship she lost in the third round to former three-time champion, Alexa Stirling.

While attending a Davis Cup match, Simone de la Chaume met the French tennis star René Lacoste. They married in 1929 and had three sons and a daughter. The Lacoste's would go on to form the Lacoste company and build a sportswear empire.

She founded the Golf de Chantaco club in Saint-Jean-de-Luz in the Pyrénées-Atlantiques département of France near Biarritz.

Simone Lacoste died in Saint-Jean-de-Luz in 2001.

Principal victories:

• 1924 : British Girls Amateur Golf Championship
• 1927 : British Ladies Amateur Golf Championship
• 1930, 1935, 1938, 1939 : French International Ladies Golf Championship
• 1936, 1937, 1939 : French Ladies National Championship