All-Time Greatest Hits is a compilation album by Australian-American pop singer Helen Reddy that was released in 1991 by EMI-Capitol Special Markets and reissued by various labels with different covers on multiple occasions since.

Stephen Thomas Erlewine of Allmusic writes, "All-Time Greatest Hits is a budget-priced, 10-track selection of Helen Reddy's best-known material from the '70s, and while there are some essential items missing [such as 'Keep On Singing', 'Emotion', and 'I Can't Hear You No More'], it still functions as a good, affordable sampler."

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