Harry Robbins "Bob" Haldeman (October 27, 1926 – November 12, 1993) was an American political aide and businessman, best known for his service as White House Chief of Staff to President Richard Nixon and his consequent involvement in the Watergate scandal.
Born in California, Haldeman served in the Navy Reserves in World War II and attended UCLA. In 1949, he joined the J. Walter Thompson advertising agency, where he worked for 20 years as a prominent advertising executive in both Los Angeles and New York City. He made a name for himself early in Los Angeles social circles from his work as chairman of the UCLA Alumni Association and a member of the University of California Board of Regents.
A long family association with the Republican Party and his own interest drew Haldeman to politics. In the 1950s, he became acquainted with Nixon, for whom he developed both an intense respect and steadfast loyalty. He began as an advance man on President Dwight D. Eisenhower's reelection campaign in 1956, again worked as an advance man on Nixon's 1960 presidential campaign, and managed Nixon's 1962 run for governor of California.