Classic X-Men, originally titled X-Men Classics and later retitled X-Men Classic, is a reprint comic book series published by Marvel Comics. The first volume was a limited series which collected stories from the Roy Thomas/Neal Adams/Tom Palmer run on X-Men (originally published in 1969). The second volume was an unlimited series and reprinted stories from the All-New All-Different X-Men era (originally published in 1975). Both volumes frequently supplemented the reprinted stories with new material. The series lasted 110 issues.