Charles Carroll MacTavish (January 18, 1818 – March 12, 1868), sometimes known as Carroll MacTavish, was an American landowner who briefly served as an Irish Repeal Association politician in the United Kingdom. MacTavish later returned to America, where he married a daughter of General Winfield Scott, and took over a large family plantation in Maryland with around fifty slaves. He remained a slaveholder until the end of the Civil War, when he sold the estate, though he was considered a loyal Union citizen. He died in 1868.