Playhouse 90 is an American television anthology drama series that aired on CBS from 1956 to 1960 for a total of 133 episodes. The show was produced at CBS Television City in Los Angeles, California. Since live anthology drama series of the mid-1950s usually were hour-long shows, the title highlighted the network's intention to present something unusual: a weekly series of hour-and-a-half-long dramas rather than 60-minute plays.

An anthology series is a written series, radio, television, film, or video game series that presents a different story and a different set of characters in each different episode, season, segment, or short. These usually have a different cast in each episode, but several series in the past, such as Four Star Playhouse, employed a permanent troupe of character actors who would appear in a different drama each week. Some anthology series, such as Studio One, began on radio and then expanded to television.