Locard

Locard is a surname and may refer to:


 * Arnould Locard, Étienne Alexandre Arnould Locard (1841-1904), French malacologist
 * Edmond Locard (1877–1966), French forensic scientist
 * Locard's exchange principle, developed by Edmond Locard
 * Sir Simon Locard, 2nd of Lee (1300–1371), Scottish knight