| The name Carl refers to more than one character, item or concept. For a list of other meanings, see Carl (disambiguation).
Carl Cotton was the fifth of Tolman Cotton's five children, with whom Sam Gamgee played as a child in Bywater Pool. At the time of the Scouring of the Shire he was no more than thirty years old (considered a young and irresponsible age by Hobbits, who did not come of age until thirty-three). When his father and brothers went to fight against Sharkey's Men, Carl was left to protect his mother and his sister. After the War of the Ring, he became Sam Gamgee's brother-in-law, when Sam married the same sister Carl had protected during the Battle of Bywater: Rosie Cotton.