Ralph D. Pittman, 75, a lawyer who was active in civic and sports affairs, died of a liver ailment. Tuesday at his home in Washington.

A friend of many top government officials, including President Eisenhower, Vice President John Nance Garner and House Speaker Sam Rayburn, he held no government jobs but remained in private practice until his death.

Mr. Pittman was a member of Pittman, Lovett, Ford & Hennessey, which he founded in 1968. Before that, he had been the Washington resident partner for 16 years in the New York law firm of Royal, Koegel, Harris & Caskey. Earlier he had been in partnership with the late James O'Connor Roberts.

Born in DeLeon, Tex., Mr. Pittman was a graduate of Baylor University, where he also received a law degree. He was captain of the university's 1924 football team, which won the Southwest Conference championship. He also was a member of the school's championship baseball team.

After coming to Washington, he was a founder and president of the Touchdown Club. He also was active in the early efforts to secure a stadium for this city.

In the 1950s, Mr. Pittman served as president of the Metropolitan Police Boys Club and the Washington Criminal Justice Association. He also was a member of the Commissioners Youth Council.

Later, he served as chairman of the Washington Board of Trade's congressional relations committee. He also had been a member of the U.S. Citizens Commission on NATO.

He was admitted to practice before the Texas, New York and D.C. bars and was a member of the D.C. and American Bar associations.

Mr. Pittman had served as moderator and chairman of the board of the Chevy Chase Baptist Church.

He was a former president of the Manor Country Club and belonged to the Burning Tree Club, the Columbia Country Club, the University Club, the Almas Temple and the Royal Order of Jesters.

He is survived by his wife, Gertrude Taylor Pittman, of the home; a daughter, Shirley Seymour, of Potomac; a sister, Mrs. Phinins Evans, of DeLeon; a brother, B.J. Pittman, of Dallas, and three grandchildren.

The family suggests that expressions of sympathy may be in the form of contributions to the Baylor fund for scholarships and loans in Waco, Tex.