There have been many film versions of "Tom Sawyer." The two I remember are "The Adventures of Tom Sawyer" w/ Tommy Kelly in the title role, and the musical version "Tom Sawyer" w/ Jodie Whitaker in the title role, which was also the version with Jodie Foster.
There have been even more versions of "Huck Finn." With the character of Tom Sawyer appearing in them, as well. The three I remember, though I don't remember if Tom Sawyer appears in all three, are "The Adventures of Huckleberry Finn" w/ Mickey Rooney in the title role, a remake with the same title w/ Eddie Hodges in the title role, and the musical version "Huckleberry Finn" w/ Jeff East in the title role.
But, as for Disney, besides "Tom and Huck" the only one I know about is "The Adventures of Huck Finn" w/ Elijah Wood in the title role. It also stars Courtney B. Vance as Jim, Robbie Coltrane as The Duke, Jason Robards as The King, Ron Perlman as Pap Finn, Dana Carvey as Widow Douglas, and Anne Heche as Mary Jane Wilkes. Just be aware that it is rated PG for a reason. The violence in it can be quite shocking at times.
Also be aware that these are film and television adaptations of the books, which means--even the Disney ones--are usually--only loosely based on the books. If one wants to prep oneself for a visit to Tom Sawyer's Island, one might be better to read the books upon which they are based. "The Adventures of Huckleberry Finn" and/or "The Adventures of Tom Sawyer." Both by Mark Twain.