Frank Waln or Oyate Teca Obmani ("Walks With Young People")[1] is a Sicangu Lakota rapper and activist.

Waln grew up on the Rosebud Indian Reservation and first began listening to hip hop as a teenager.

His single Hear My Cry, a collaboration with Cody Blackbird, was nominated for two Nammy awards in 2013 after its release, winning one;[5] Oil 4 Blood, a 2013 song about the Keystone XL pipeline, was singled out by Policymic.com, who identified him as one of '7 First Nation Rappers Crushing Stereotypes of Indigenous People Through Music'.

[7][8] Along with Nataani Means, Mike "Witko" Cliff, and Inez Jasper, Waln was featured in the MTV documentary Rebel Music.

[10] and went on to release Born Ready in 2020[11] Noted for his work in opposition to the Keystone XL pipeline,[12] Waln contributes to the Dream Warriors scholarships, a project founded by Tanaya Winder (who manages Waln, Tall Paul and Mic Jordan) to provide scholarships to Native Americans looking to study and perform music.