"One Day at a Time" is an American sitcom that aired on CBS from December 16, 1975, until May 28, 1984. It features Ann Romano, a divorced mother, who moves from their home in Logansport, Indiana to Indianapolis with her daughters, the rebellious Julie and the wisecracking Barbara. Ann frequently struggles with maintaining her role as mother while affording her daughters the freedom she never had as a young woman. David Kane, Ann's divorce lawyer and neighbor, takes a romantic interest in her, but she isn't ready to remarry. Dwayne Schneider, the building's quirky superintendent (most often referred to only by his last name), provides usually unwanted advice to the tenants.

Like many sitcoms developed by Norman Lear, "One Day at a Time" often tackled serious issues in life and relationships, particularly those related to second wave feminism. Stories depicting such events as weddings, births, and other important milestones frequently stretched over two-, three-, and four-part episodes.

The series consistently ranked among the top twenty (if not the top ten) programs in the ratings. However, the network moved the show around on the prime time schedule eleven times. By the end of the 1982–83 season, viewership was beginning to slip and the series ended season eight ranking at No. 16. At this time, Bonnie Franklin and Valerie Bertinelli were anxious to move on, but agreed to do a ninth (and final) season.

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