Maria B. Campbell Associates, Inc. is an international literary consulting company that advises clients about American and international books for publication and translation in their markets. The present client roster includes international publishers in fifteen countries including Brazil, Finland, France, Germany, Greece, Hungary, Italy, Japan, Korea, The Netherlands, Russia, Spain, Sweden, Taiwan and the United Kingdom. Maria B. Campbell Associates, Inc. works with books for the general adult trade market and for the children's market.

Maria B. Campbell Associates, Inc. is the exclusive literary representative of Warner Bros. and in this capacity advises the studio on books suitable for film adaptation.

Maria B. Campbell Associates, Inc. is located in New York City and was founded in 1994 by Maria B. Campbell. It currently employs nine full time associates.