Celia Barker Lottridge (born 1936) is a Canadian children's writer.
Lottridge was born in Iowa City, Iowa. She received a BA in modern European history from Stanford University, a MLS from Columbia University and a BEd from the University of Toronto. Lottridge worked as a librarian in San Diego, New York City and Rhode Island. She was a teacher and librarian for the Toronto School Board. From 1977 to 1990, she was a book buyer for a children's book store in Toronto.[citation needed]