- Mario , the Nintendo mascot
- --- Mario Baby , a name given to the pirated Famicom/Nes version of Bio Miracle Bokutte Upa
- Mario Segali , his namesake
- Mario (singer) , an American R&B singer
- Mario Aerts , a professional cyclist from Belgium
- Mario Andretti , an American race car driver
- Mario Batali , an American chef
- Mario Benedetti , an Uruguayan journalist, novelist, and poet
- Mario Berlinguer , a lawyer
- Mario Botta , an architect
- Mario Cipollini , professional road cyclist from Italy
- Mario Cuomo , a former governor of New York
- Mario Dumont , a Quebec politician
- Mario Jean , a stand-up comedian and film and television actor from Quebec, Canada
- Mario Lanza , an Italian American opera tenor and Hollywood movie star in the 1950s
- Mario Lemieux , a professional ice hockey player
- Mario Lopez , an actor and television host
- Mario Mendoza , a former Major League Baseball infielder
- Mario Monti , a businessman
- Mario Piu , an Italian DJ
- Mario Puzo an author
- Mario Salieri , an Italian porn director
- Mario Sandoval , singer-songwritter member of the Mexican Pop duet Lu (Duet)
- Mario Savio , an American political activist.
- Mario Sperry , a heavyweight martial artist from Brazil
- Mario Tremblay , a professional ice hockey player and coach
- Mario Williams , an American football player
- Mario Winans , an R&B singer
- Mario Vasquez , former American Idol 4 contestant and singer
- Mario Zagallo , a Brazil football player and coach
- Super Mario, a reference to Nintendo 's Mario. (see Mario above)
- Super Mario, a nickname for the professional hockey player Mario Lemieux
- ---Mario Jr., a reference to Mario Lemieux, in the abilities of then teammate Jaromir Jagr
- Super Mario, a nickname for Austrian Olympic skier Mario Reiter
- A reference to the frequently energetic, and youthful (Nintendo generationish) Quebec politician, Mario Dumont
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