Daniel, Dan or Danny Wallace may refer to:

• Daniel Wallace (politician) (1801–1859), U.S. Congressman from South Carolina
• Daniel B. Wallace (born 1952), professor of New Testament Studies at Dallas Theological Seminary
• Daniel Wallace (author) (born 1959), American author of the novel Big Fish
• Daniel J. Wallace (born 1949), American rheumatologist, professor and author
• Danny Wallace (footballer) (born 1964), English former international footballer
• Danny Wallace (humorist) (born 1976), author of Join Me and Yes Man, and television presenter
• Dan Wallace (politician) (1942–2025), Irish politician
• Dan Wallace (swimmer) (born 1993), Scottish swimmer
• Daniel Wallace, the plaintiff in Wallace v. International Business Machines Corp. et al., a 2006 lawsuit filed against the GNU General Public License