The Adventures of Tom Sawyer, by Mark Twain, exists as the quintessential American text. The text illustrates the importance of imagination and loyalty. The friendships illustrated in the novel are of the kind which modern children may fashion their own after. As noted in the summary provided by eNotes, many people know of the adventures of Tom and his friends without having even read the novel.
Tom has many friends whom he shares in his adventures with.
Huckleberry Finn-- Tom's best friend. The two play together even though Tom has been told to stay away from Huck (by Aunt Polly).
Becky Thatcher--Tom's girlfriend. Tom falls madly in love with her the first time he looks at her. The two find themselves lost in a cave for days. Becky finds that she has to completely depend upon Tom to survive.
Joe Harper--Goes with Tom on an adventure (running away to Jackson's Island). He is a member of Tom's gang of pirates.