Adja Yunkers (born Adolf Eduard Vilhelm Junker; July 15, 1900 – December 24, 1983) was a Latvian-born American abstract painter and printmaker. He was born in Riga, then part of the Russian Empire (now Latvia), and began drawing at an early age. He studied art in Petrograd (now St. Petersburg), Germany, France, and later in London, though he later fabricated some of his academic credentials.

Yunkers lived in Europe for much of his early career, moving through Germany, Spain, Cuba, and France, where he became involved in political and artistic movements. He fled Cuba in 1927 due to political upheaval and later settled in Sweden in 1939, where he gained recognition for his graphic work and published art magazines. In 1947, he emigrated to the United States, settling in New York City, where he taught at the New School for Social Research and the University of New Mexico.

He became a U.S. citizen in 1953 and was awarded a Guggenheim Fellowship in 1949. Yunkers was known for his innovative work in color woodcuts and lithography, producing major series such as Salt and Skies of Venice at the Tamarind Lithography Workshop. He also founded the Rio Grande Workshop in Albuquerque, New Mexico, and published the handmade magazine Prints in the Desert.

His work is held in major collections worldwide, including the Museum of Modern Art (MoMA), the Whitney Museum of American Art, the Guggenheim Museum, and the Smithsonian American Art Museum. He died in New York City in 1983.