John William Shurna (born April 30, 1990) is an American–Lithuanian[1] professional basketball player for Gran Canaria of the Spanish Liga ACB.

Shurna was a 2007 and 2008 Chicago Tribune All-State boys basketball team special mention selection.

[3][4] As a junior, in March 2007, he led Glenbard West High School to the Class AA supersectional for the first time since 1938,[5] but they lost to Lockport Township High School 53–50 despite 27 points by Shurna, according to the Chicago Sun-Times, but only 21 according to the Daily Southtown and Chicago Tribune.

In addition, he won the 2008 IHSA 4A slam dunk championship at the state tournament,[12] but finished second to Marland Johnson by a point in a contest of the winners of the four classes.

[21] Following the 2009–10 All-Big Ten Conference regular season, he was named a second-team All-conference selection by both the coaches and the media.

[24][25] He was recognized as an All-District second-team selection by the National Association of Basketball Coaches making him eligible for the State Farm Division I All‐America teams.

[26] He finished his sophomore season among the Big Ten leaders in many statistical categories: 3rd in scoring, 7th in rebounding, 10th in free throw percentage, 8th in blocked shots, and 6th in minutes played.

[29] As a junior, he was a preseason top 50 candidate for both the John R. Wooden Award and the Naismith College Player of the Year.

[30][31] In the first game of his junior season, Shurna tied his career-high with 31 points on his way to Big Ten Player of the Week honors.

[54] He was selected by the U.S. Basketball Writers Association to its 10-man 2011–12 Men's All-District V (OH, IN, IL, MI, MN, WI) Team.

[56] Shurna finished the season with a 20.0 point per game average, which led the Big Ten Conference.

[65] After he played on the Milwaukee Bucks' 2013 NBA Summer League team,[66] Shurna signed a 2-year contract with Joventut Badalona.

[71] On November 13, 2016, Shurna signed with Croatian club Cedevita Zagreb for the rest of the season.

[72][73] On July 27, 2017, Shurna signed a one-year deal with MoraBanc Andorra of the Liga ACB.

[74][75] On August 18, 2018, Shurna re-signed a one-year deal with MoraBanc Andorra of the Liga ACB.