After the Pozo-Seco Singers disbanded, Don Williams briefly worked outside the music industry. Soon, however, Williams resumed his career in music. In December 1971, Williams signed on as a songwriter for Jack Clement with Jack Music Inc. In 1972, Williams inked a contract with JMI Records as a solo country artist. His 1974 song, “We Should Be Together,” reached number five, and he signed with ABC/Dot Records.[citation needed] At the height of the country and western boom in the UK in 1976, he had top forty pop chart hits with “You’re My Best Friend” and “I Recall a Gypsy Woman”, and, in 1978, a #2 album, Images. His first single with ABC/Dot, “I Wouldn’t Want to Live If You Didn’t Love Me,” became a number one hit, and was the first of a string of top ten hits he had between 1974 and 1991. Only four of his 46 singles didn’t make it to the Top Ten. “I Believe in You” is a 1980 single written by Roger Cook and Sam Hogin and recorded by Don Williams. It was Williams’ eleventh #1 on the country chart. It stayed at #1 for two weeks and spent 12 weeks on the country chart. It was his only Top 40 chart entry, where it peaked at #24. It was also hit in Australia, New Zealand and Europe. Williams had some minor roles in Burt Reynolds movies. In 1975, Don appeared as a member of the Dixie Dancekings band in the movie W.W. and the Dixie Dancekings alongside Reynolds. Don also appeared as himself in the Universal Pictures movie, Smokey and the Bandit II, in which he also played a number of songs.

Early in 2006, Don Williams announced his “Farewell Tour of the World” and played numerous dates both in the U.S. and abroad, wrapping the tour up with a sold-out “Final Farewell Concert” in Memphis, Tennessee at the Cannon Center for Performing Arts on November 21, 2006. In 2010, Williams came out of retirement and was once again touring. In March 2012, Williams announced the release of a new record And So It Goes (UK release April 30, 2012; U.S./Worldwide release June 19, 2012), his first new record since 2004. The record is his first with the independent Americana label Sugar Hill Records. The record includes guest appearances by Alison Krauss, Keith Urban, and Vince Gill. To accompany his latest album release he embarked on a UK Tour. A much loved country artist among British fans he had his final UK tour in 2014. In March 2016, Williams announced he was retiring from touring and cancelled all his scheduled shows. “It’s time to hang my hat up and enjoy some quiet time at home. I’m so thankful for my fans, my friends and my family for their everlasting love and support,” he said in a statement. On September 8, 2017, Williams died in Mobile, Alabama due to emphysema.