Omar \o-mar\ as a boy's name is pronounced OH-mar. It is of Arabic and Hebrew origin, and the meaning of Omar is "speaker; flourishing, long-lived". Biblical: a sheik of Edom and son of Esau. Omar Khayyam (12th century) was a Persian poet, astronomer, and mathematician. Caliph Omar II made Islam an imperial power. Poet Omar Khayyam; General Omar Bradley; actor Omar Sharif.
For more information, see also the related name Umar.