Lalanne is a surname. Notable people with the name include:
Alfredo Lalanne (born 1983), Argentine rugby player
Cady Lalanne (born 1992), Haitian professional basketball player
Carlos Lalanne (born 1906), Chilean sports shooter
Francis Lalanne (born 1958), French-Uruguayan singer, songwriter, and poet
Jack LaLanne (1914–2011), American fitness, exercise, nutritional expert
Léon Lalanne (1811–1892), French engineer and politician
Ludovic Lalanne (1815–1898), French historian and librarian
Maxime Lalanne (1827–1886), French etcher and drawer
Stanislas Lalanne (born 1948), French Roman Catholic bishop
