The Oklahoma City Police Bilingual Unit was formed in 2003, with the purpose of assisting the police department to perform its mission and deliver its services in situations where languages other than spoken English are used. The Bilingual Unit is comprised of police officers from various units within the department who are proficient in Spanish, Vietnamese, or Sign Language.

The Bilingual Unit assists the department in accomplishing its mission by providing trained interpreters to assist in routine calls and investigations. Members of the Bilingual Unit maintain positive contact and relationships with various communities and individuals who speak languages other than spoken English, and by performing linguistic and cultural training.

Officers who pass a proficiency test and become members of this unit receive incentive pay of up to $100 per pay-period, depending on their level of proficiency. 

The Oklahoma City Police Department also uses the Language Line service to communicate via phone with certified interpreters who can communicate in various other languages.