Ahmed Ayoub Hafnaoui (Arabic: أحمد أيوب حفناوي[romanization needed]; born 4 December 2002) is a Tunisian swimmer.

[6][7] Olympic and World Champion Tunisian swimmer Ahmed Hafnaoui has accepted a voluntary provisional suspension after an assertion of an anti-doping rules violation from the International Testing Agency (ITA).

In October, Hafnauoi announced he would be competing at Etihad Arena in December as part of the 2021 World Short Course Swimming Championships in Abu Dhabi, United Arab Emirates.

[1] Starting his competition on day one of the championships, 16 December, Hafnaoui swum a 3:40.30 in the prelims heats of the 400 metre freestyle to rank tenth overall.

[15] On Day five, Hafnaoui ranked second in the 1500 metre freestyle prelims heats, qualifying for the final with a time of 14:25.77.

[16] He won the silver medal in the final of the 1500 metre freestyle on day six in an African record time of 14:10.94.

[3] On 11 January 2023, Hafnaoui won the gold medal in the 800-metre freestyle at the TYR Pro Swim Series in Knoxville, with a time of 7:53.10, which was over three full seconds faster than second-place finisher American Robert Finke.

Hafnaoui will attend Indiana University in fall 2023 as a member of their men's swimming team.