Luis Trenker (born Alois Franz Trenker, 4 October 1892 – 13 April 1990) was a South Tyrolean film producer, director, writer, actor, architect, and alpinist.
Alois Franz Trenker was born on 4 October 1892 in Urtijëi, Tyrol (German: St. Ulrich in Gröden, Italian: Ortisei) in the Austro-Hungarian Empire (in present-day northern Italy). His father Jacob Trenker was a painter from North Tyrol, and his mother Karolina (née Demetz) was from Urtijëi in Val Gardena. He grew up speaking two languages: German, the language of his father, and Ladin, the language of his mother. He attended the local primary school from 1898 to 1901, and then attended the Josefinum in Bolzano in 1902 and 1903. From 1903 to 1905, he attended the arts and crafts school in Bolzano, where he developed his skills as a woodcarver.
In 1912, he entered the Realschule in Innsbruck, where he studied Italian as a foreign language. There he began his middle school studies. During his high school years, he spent his holidays working for mountain guides and ski instructors. After his matriculation examinations in 1912, Trenker studied architecture at the Technical University in Vienna.