That Was the Week That Was, informally TWTWTW or TW3, is a satirical television comedy programme that aired on BBC Television in 1962 and 1963. It was devised, produced, and directed by Ned Sherrin and Jack (aka John) Duncan, and presented by David Frost.

The programme is considered a significant element of the satire boom in the UK in the early 1960s, as it broke ground in comedy by lampooning political figures. Its broadcast coincided with coverage of the politically charged Profumo affair, and John Profumo became a figure of derision. TW3 was broadcast from Saturday, 24 November 1962 through late December 1963. An American version under the same title aired on NBC from 1964 to 1965, also featuring Frost.