Zemgus Girgensons (born 5 January 1994) is a Latvian professional ice hockey centre currently playing for the Buffalo Sabres of the National Hockey League (NHL). He was selected 14th overall in the 2012 NHL Entry Draft by the Buffalo Sabres. With this selection, Girgensons became the highest-drafted Latvian in NHL history, 16 spots higher than previous highest selection, Sandis Ozoliņš, in 1991. In the previous year, Girgensons was selected in the second round, 28th overall, in the 2011 Kontinental Hockey League (KHL) Junior Draft by CSKA Moscow.
Girgensons become playing hockey in EVHS hockey school and was coached by former Dinamo Rīga player Edmunds Vasiļjevs. He played in Latvian minor and youth leagues.
In 2009, Girgensons moved to North America and played in the Eastern Junior Hockey League (EJHL) for the Green Mountain Glades. The next season, he moved to the United States Hockey League (USHL) and played for the Dubuque Fighting Saints. In 2011, he became a USHL champion with the Fighting Saints, and he also participated in the USHL All-Star Game. In the 2011–12 season, his last as a junior, Girgensons was named as the captain of the Fighting Saints.