Leppä

Leppä is a Finnish surname of Laine type literally meaning "alder". Notable people with the surname include:
 * Aleksi Leppä
 * Henry Leppä
 * Jari Leppä, Finnish politician
 * Jouko Leppä, Finnish Olympic weightlifter
 * Juhani Leppä, Finnish politician
 * Leo Leppä
 * Perttu Leppä (born 1964), Finnish film director and writer
 * Sulho Leppä (1878–1918), Finnish politician