"For All We Know" is a popular song originally written for the 1970 film Lovers and Other Strangers by Fred Karlin, Robb Wilson (Robb Royer) and Arthur James (Jimmy Griffin). It was originally performed by Larry Meredith.

It was heard by Richard Carpenter of The Carpenters during an evening of relaxation at the movies while on tour. Carpenter decided it would be ideal for the duo. It became a hit for them in 1971, reaching number three on the Billboard Hot 100 singles chart and number one for three weeks on the U.S. easy listening chart.

The song then went on to win the Academy Award for Best Original Song, though the Carpenters were not allowed to perform the song at the ceremony as they had not appeared in a film. At their request, the song was performed by British singer Petula Clark. Clark performed the song in concert on February 6, 1983 in tribute to Karen Carpenter, who had died two days before.

In 1972, Richard and Karen appeared on Tom Jones' "Special London Bridge Special", where they performed a reprise to "For All We Know." It was never released to the public until 2000, with the release of The Singles: 1969-1981.

The song became a hit in the UK for Shirley Bassey in 1971. It peaked at number six during a 24-week chart run.
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