Clifford Davis Jr., 51, a lawyer, died Feb. 25 at home in Garret Park after apparently suffering a heart attack.

Born in Memphis, he was the son of the late Rep. Clifford Davis (D-Tenn.). He came here when his father was first elected to Congress in 1940.

Mr. Davis attended the University of North Carolina and graduated from George Washington University's school of government and its law school.

From 1958 to 1963, he was a lawyer with the Chesapeake & Potomac Telephone Co. of Maryland in Baltimore. He then transferred here as an attorney for the C&P Telephone Companies, specializing in public and urban affairs.

Mr. Davis became general attorney for Levitt and Sons, Inc., in the firm's southern zone here in 1970. Later he was a lawyer in the office of the general counsel of the Atomic Energy Commission.

He left AEC about a year ago and established a private practice at his home.

Mr. Davis was a member of the D.C. and American Bar associations, Ohi Delta legal fraternity and the Barristers.

He is survived by his wife, Betsy Perry Davis, of the home; a daughter Deborah, of Cockeysville, Md.; his mother, Mrs. Clifford Davis of Washington; a brother, Ray E., of East Glastonbury, Conn., and a sister, Barbara D. Chauncey, of Bethesda.

The family suggests that expressions of symphaty be in the form of contributions to the Multiple Sclerosis Society.