Lalanne is a surname. Notable people with the name include:
Alfredo Lalanne (born 1983), Argentine rugby player Cady Lalanne (born 1992), Haitian basketball player Carlos Lalanne (born 1906), Chilean sport shooter Francis Lalanne (born 1958), French-Uruguayan singer, songwriter, and poet Jack LaLanne (1914–2011), American fitness, exercise, nutritional expert Jean-Louis Lalanne (1954–2025), French footballer 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