WASHINGTON (AP) _ President Reagan appointed Carolyn J. Deaver, wife of former White House deputy chief of staff Michael K. Deaver, as a member of the federal Commission on Fine Arts on Tuesday.

Mrs. Deaver is a consultant to a public relations firm. Her husband, one of the president's closest confidants, opened his own consulting firm this year after nearly two decades of service with Reagan.

Other new members of the commission are Neil H. Porterfield of St. Louis, head of the Department of Landscape Architecture at Pennsylvania State University; Pascal Regan, a sculptress of Beverly Hills, Calif.; Diane Wolf of New York, founder of the Junior Committee of the Metropolitan Museum of Art, and Roy M. Goodman, a New York state senator.

J. Carter Brown, director of the National Gallery of Art, was reappointed to the panel.