One & Two are a pair of separate but related 12" compilation albums (LPs) by American jazz pianist Thelonious Monk released on Blue Note in 1956.

Later re-issues on CD include more material recorded at the same sessions but not released on the original LPs.

Monk recorded six sessions for Blue Note, all produced by Alfred Lion: October 15 and 24, 1947, November 21, 1947, July 2, 1948, July 23, 1951, and May 30, 1952.

After 10"s lost the format war, Blue Note began reissuing its Modern Jazz Series on 12"s. Material from the two ten-inches, the 1952 session, and other outtakes were recompiled on Genius of Modern Music, Vol.

One (BLP 1510) and Genius of Modern Music, Vol.