Ruth Baldwin
Ruth Baldwin may refer to:

 Ruth Bowyer (1761–1788), English convict sent to Australia, also known as Ruth Baldwin
 Ruth Ann Baldwin (1886–?), American silent film writer and director
 Ruth Baldwin (died 1937) (1905–1937), American-born English socialite
 Ruth Standish Baldwin (1865–1934), co-founder of the National Urban League
 Ruth M. Baldwin, book collector who founded the Baldwin Library of Historical Children's Literature