Younes El Aynaoui (Arabic: يونس العيناوي) (born 12 September 1971) is a Moroccan former professional tennis player.

In 1990, at the age of 18, El Aynaoui traveled to Bradenton, Florida, to spend a week at the Nick Bollettieri Tennis Academy, after which he decided to turn professional.

In 1993, he reached his first top-level Grand Prix singles final in Casablanca, where he lost to the Argentinian player Guillermo Pérez Roldán.

In 1999, El Aynaoui won his first top-level singles title in Amsterdam and the following year he reached the quarter-finals of the Australian Open where he lost to Yevgeny Kafelnikov.

The following year, he reached the quarter-finals of the Australian and US Opens and finished the season ranked a career-high World Number 14.

1, Lleyton Hewitt, 6–7, 7–6, 7–6, 6–4, thus setting up a quarter-final showdown with the up-and-coming American Andy Roddick (who would reach the World No.

After a three-year hiatus due to injury, El Aynaoui made a comeback to the ATP tour in January 2007, and was awarded a wildcard at the Qatar Open, Doha.

He also reached the quarter-finals of the Casablanca Open in Morocco, retiring to Juan Mónaco due to an injury in his left calf.

He played American Ryler DeHeart in the first round of this tournament and won 7–6, 7–6, thus becoming at age 38 the oldest player to win a main tour ATP match since Jimmy Connors in 1995.

[2] In March 2017, at the age of 45, El Aynaoui participated in a US$15,000 tournament in Manama, Bahrain on the ITF Men's Circuit.