Leo is a 2023 American animated musical comedy film directed by Robert Marianetti, Robert Smigel and David Wachtenheim (in Marianetti and Wachtenheim's feature directorial debuts), written by Smigel, Adam Sandler, and Paul Sado, and produced by Sandler and Mireille Soria. The second animated feature from Sandler's production company Happy Madison Productions, it stars him in the titular voice role, alongside Bill Burr, Cecily Strong, Jason Alexander, Sadie Sandler, Sunny Sandler, Rob Schneider, Jo Koy, Allison Strong, Jackie Sandler, Heidi Gardner, Robert Smigel, and Nick Swardson. It tells the story of a tuatara longing for the wild and worried about dying who is taken home by different students per the assignment of a strict substitute teacher.