Reginald Fils-Aimé (/ˈfiːsəmeɪ/ FEE-sə-may; born March 25, 1961) is an American businessman best known for being the president and chief operating officer of Nintendo of America, the North American branch of the Japanese video game company Nintendo, from 2006 to 2019. Prior to his promotion to president and COO, Fils-Aimé was executive vice president of sales and marketing.

Fils-Aimé gained celebrity status among gamers following his appearance at Nintendo's E3 2004 press conference in May 2004, and helped to revitalize Nintendo's image as a major contender among the other video game console makers, Sony Interactive Entertainment and Microsoft. Fils-Aimé had held previous sales and marketing executive roles at Procter & Gamble, Pizza Hut, Guinness, Derby Cycle, Panda Express, and VH1.

Fils-Aimé retired as president of Nintendo of America on April 15, 2019, after an announcement on February 21, and was succeeded by Doug Bowser. He subsequently became a Leader in Residence at Cornell University and was later named to the board of directors for Brunswick Corporation, GameStop, and Spin Master.

Reginald Fils-Aimé was born on March 25, 1961, in The Bronx, New York City. His parents had immigrated to the United States from Haiti in the 1950s due to conflicting political views of his grandparents; his paternal grandfather was a general when the Haitian military overthrew the democratically elected government, which included his maternal grandfather. Fils-Aimé's mother worked as a lead sales representative in a fine jewelry store and his father was a machinist. Fils-Aimé has said that he adopted his optimistic attitude from his mother. He was raised on Long Island, where he attended Brentwood High School; he described himself as the "lone minority" among his classmates. He was accepted into Cornell University in 1979, and graduated with a Bachelor of Science in applied economics and management from the College of Agriculture and Life Sciences in 1983. He was president of the school's Phi Sigma Kappa fraternity chapter, where he was described as being neat and organized.

Fils-Aimé took a job at Procter & Gamble in the company's brand management program. He also took a position as senior director of national marketing at Pizza Hut, where he launched the Bigfoot Pizza and the Big New Yorker.

Fils-Aimé served as the Head of Marketing for Guinness Imports Co. in the United States and was responsible for all brands. He also worked as chief marketing officer at Derby Cycle, directing sales and marketing efforts worldwide for eight brands. Fils-Aimé served as managing director and oversaw Raleigh U.K., Derby's British operations.

He then joined the American Chinese food company Panda Management Co. acting as senior vice-president. He also joined MTV's VH1 network in 2001 as senior vice-president and left in 2003. Fils-Aimé was responsible for a 30% increase in ratings for the VH1 network by shifting the channel's focus to appeal to younger viewers. As part of his role at VH1, Fils-Aimé also laid out and implemented a marketing strategy for The Concert for New York City, which garnered more than $35 million for disaster relief following the September 11 attacks.

Fils-Aimé joined Nintendo in December 2003 as the executive vice president of sales and marketing. Fils-Aimé had been recruited for the position, but during the interview period, he said that he had asked to see Satoru Iwata, the president of Nintendo, which was considered highly unusual but was granted. His conversation with Iwata went far longer than planned and it helped to establish the friendly relationship Fils-Aimé had with Iwata for more than a decade which, according to Fils-Aimé, helped with open communications and understanding to help Nintendo improve overall as a business. Because of this, Fils-Aimé has called Iwata his mentor as well as a "dear friend" throughout his time at Nintendo.