Likely a modern Spanish-style blend of Isa and mar, often interpreted as combining God-linked and sea imagery.
Isamar is a name with roots in both Hebrew and the broader Semitic naming tradition, most commonly understood as a combination of the Hebrew elements: either a variant of Itamar (אִיתָמָר), meaning "island of palms" or "coast of palms," or a blending of Isa (a form related to the Hebrew Yishai, "gift" or "God's salvation") with mar ("bitter" or, in Aramaic, "lord/master"). Itamar himself is a figure in the Hebrew Bible, the fourth son of Aaron the High Priest, who played an important administrative role in the Tabernacle during the Israelites' desert wandering. The name traveled through Sephardic Jewish communities and into the Spanish-speaking world, where it took on particular warmth in Latin American naming culture.
In countries like Puerto Rico, the Dominican Republic, and Mexico, Isamar became a distinctly feminine form, retaining its biblical dignity while acquiring a lyrical Latin softness. The combination of the familiar Maria-adjacent ending and the exotic opening syllable gave it an appeal across both religious and secular naming traditions. In contemporary use, Isamar is most common among Latino communities in the United States and across Latin America.
It occupies an interesting bicultural position — recognizably Spanish-inflected in sound but carrying the ancient weight of Hebrew scripture. It is a name that bridges worlds, which perhaps explains why it remains popular among families navigating multiple languages and heritages, offering a child a name that speaks to both their ancestral roots and their present home.