Alexandru Coci (born October 31, 1989) is a Romanian swimmer, who specialized in butterfly events.

Coci also became the first swimmer for the University of Alabama to break a 47-second barrier, when he posted a time of 46.50 seconds in the same stroke at the NCAA Division I Championships.

[3] Coci qualified for the men's 200 m butterfly at the 2012 Summer Olympics in London, by eclipsing a FINA B-standard entry time of 1:58.42 from the European Championships in Debrecen, Hungary.

[4][5] He challenged seven other swimmers on the second heat, including former semifinalist Hsu Chi-chieh of the Chinese Taipei.

After 2012 Summer Olympics, Coci has transferred schools to Arizona State University where he was coached and trained by former finalist, butterfly swimmer, and three-time Olympian Ioan Gherghel (2000, 2004, and 2008).