Spark is a surname. Notable people with the surname include:
Alex Spark (1949–1993), Scottish footballer Alexander Brodie Spark (1792–1856), Scottish-born Australian merchant Anna Smith Spark (born 1978 or 1979), British fantasy author Debra Spark (born 1962), American writer Jeany Spark (born 1982), British actress Muriel Spark (1918–2006), Scottish novelist Nick T. Spark, American film-maker and writer