Stuart Krieg Spencer (né Murphy; February 20, 1927 – January 12, 2025) was an American political consultant.

In 1976 he served as Deputy Chairman for Political Organization in Gerald Ford's presidential re-election campaign.

[citation needed] In 1985, his firm allegedly received over $350,000 to run the Panamanian presidential campaign of Eric Delvalle, and in 1988 he was assigned to improve Dan Quayle's image.

[citation needed] Spencer's daughter, Karen, joined Spencer-Roberts in 1989 and expanded the firm's roles into public policy, avocation, and political strategic planning.

[citation needed] Spencer voted Democratic for president only twice in his life: in the 1948 election, he supported Harry S. Truman, as he felt he "owed him one" due to Truman's decision to drop atomic bombs over Hiroshima and Nagasaki, which prevented him from having to fight in Japan during his Navy service.