Steven Mehrdad Beitashour[2] (/ˈbeɪtəʃʊər/ BAY-tə-shoor;[3] Persian: استیون مهرداد بیت‌آشور [mehɾdɒːd-e beit-ɒːʃuːɾ], Syriac: ܣܬܝܒܢ ܡܗܪܕܐܕ ܒܝܬ ܐܫܘܪ; born February 1, 1987) is a former professional soccer player who played as a right-back.

[5][7][8] His father, an electrical engineer, played soccer for San Francisco State University before working for Apple.

[5][14][15] Steven was the captain of his high school's varsity team and was their leading goalscorer his junior and senior years in the number 10 role.

[16] In his graduating year at Leland, Beitashour received the inaugural Pat Tillman Award, given to a Bay Area student for outstanding achievements in both athletics and academics.

[5] He went on to play four years of college soccer at San Diego State University after receiving a scholarship, redshirting his freshman season.

[4][5][9] Coach Lev Kirshner moved Beitashour to the right-back position in order to utilize his quick speed and one-on-one defending abilities.

[26][27] On March 8, Beitashour played his first match for the Whitecaps in their season opener against the New York Red Bulls, providing a secondary assist to Kenny Miller in their 4–1 win.

[35] On March 14, 2015, in the second game of the Whitecaps' 2015 season, Beitashour provided an assist to Octavio Rivero during the 86th minute in a 1–0 win over the Chicago Fire.

[40] On November 30, 2016, Beitashour provided an assist to Benoît Cheyrou to clinch the Eastern Conference title during the 2016 MLS Cup Playoffs.

[41] On October 22, 2017, Toronto FC won the Supporters' Shield, breaking the MLS record for the most points in a single season.

[50] In December 2020, Beitashour signed a one-year contract extension with the Rapids ahead of the 2021 Major League Soccer season.

"Iran national team coach Carlos Queiroz began to recruit eligible players from the Iranian diaspora to reinforce the squad.

[7] Beitashour was called up for an international friendly by the United States national football team against Mexico on August 15, 2012;[59] however, he was an unused substitute.

"On October 5, 2013, Beitashour was called up to the Iran national football team by Carlos Queiroz to be part of the preliminary 27-man squad for a 2015 AFC Asian Cup qualification match against Thailand.

[64] His first assist came to striker Ghoochannejhad against Thailand in the away leg on November 15, helping to seal their place in the 2015 AFC Asian Cup.

[72][73] On August 12, 2024, the San Jose Earthquakes announced that Beitashour would be the Quakes Academy’s Under-15 head coach for the 2024–25 MLS NEXT season.

[75] On February 7, 2025, Beitashour was announced as the assistant coach of Robin Fraser at Toronto FC ahead of the 2025 season.