Karlis Irbitis (October 14, 1904, Lade parish, Governorate of Livonia – October 13, 1997, Saint-Laurent, Quebec, Canada) was a Latvian aeroplane designer.
His greatest successes, for the VEF Factory, were the sports plane VEF I-12 (1935) and the monoplane VEF I-16 (1939), used as a fighter.
After World War II, when he had emigrated to Canada, he was the designer of the experimental Canadian vertical landing and take-off aeroplane, the CL-84 (1950).