Herdman is an English surname. Notable people with the surname include: Alexander Herdman (1869–1953), New Zealand politician Bob Herdman (born 1966), American musician John Herdman (born 1975), English football manager Joshua Herdman (born 1987), English actor Martin Herdman (born 1956), English actor and rugby league player, father of Joshua Herdman Priscilla Herdman, American folk singer William Abbott Herdman (1858–1924), Scottish marine zoologist and oceanographer William Gawin Herdman (1805–1882) English author and painter