Marshall Wittmann (born 1953) is an American political strategist, lobbyist, and communications expert with a career spanning both Democratic and Republican affiliations. Raised in Waco, Texas, he developed an early interest in politics, volunteering at age 15 for the antiwar presidential campaign of Eugene McCarthy, reflecting his initial Democratic roots. His ideological journey has been eclectic, moving from progressive causes to conservative think tanks and back to moderate Democratic circles, often positioning himself as a centrist voice in Washington politics. Wittmann's professional trajectory includes significant roles in policy and communications: in the 1990s, he served as Director for Legislative Affairs at the Christian Coalition of America; from September 2000 to October 2002, he was a senior fellow at the Hudson Institute; he later joined the Progressive Policy Institute and the Democratic Leadership Council as a senior fellow; in 2006, he briefly worked as communications director for Senator John McCain; on November 22, 2006, he was hired as communications director and spokesman for Senator Joe Lieberman (I-CT). He is a former Republican staffer and advocate for conservative pro-Israel policies. Currently, Wittmann serves as the longtime Director of Communications and Public Affairs—or Chief Communications Officer—for the American Israel Public Affairs Committee (AIPAC), specifically as AIPAC's Director of Public Affairs and Strategic Communications, a prominent pro-Israel lobbying organization, where he handles media strategy and public relations. He is also listed as Communications Director at the U.S. Senate, based in Silver Spring, Maryland. His work has involved bridging bipartisan divides on foreign policy and domestic issues, though his shifts between parties have drawn attention for their ideological flexibility. He is a veteran Republican strategist.