Jesse Laventhol, 80, a former journalist and public relations consultant and retired official of the House of Representatives, died Saturday at the Chevy Chase Nursing Home in Silver Spring after a stroke.

Mr. Laventhol was executive assistant of the House's Office of Coordinator of Information from 1949 until retiring in 1967. During these years he directed a research staff.

He was the author of "Major Legislative Actions," a series of reports on the status of bills from the 81st through 90th congresses. He wrote "Mr. Sam," a series of pieces syndicated in newspapers around the country in 1961 that told of the life and times of the late House Speaker Sam Rayburn (D-Texas).

Mr. Laventhol was born in Cape May, N.J., and was reared in Philadelphia. He attended Bucknell University in Lewisburg, Pa. Between 1918 and 1937 he was a reporter and editor for four newspapers in Philadelphia, including the Record, where he worked for 10 years as day city editor and chief of the bureau in Harrisburg, the state capital.

He was public relations director for the Pennsylvania State Highway Commission from 1937 to 1939, then started his own public relations consulting firm. He came to Washington in 1944, working as a public relations consultant until joining the House of Representatives staff five years later.

Mr. Laventhol lived in Washington before moving to Chevy Chase 15 years ago. He was a member of the Kesher Israel Congregation in Washington and the National Press Club.

Survivors include his wife, Clare, of Chevy Chase; a son, David, publisher of Newsday and a resident of Port Washington, N.Y.; a daughter, Lucy Brody of Teaneck, N.J.; a brother, Lewis, of Philadelphia, and eight grandchildren.A second son, Jules, died in 1970.