Hasdai is a given name. Notable people with the name include:
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Hasdai ben Hezekiah, son of Hezekiah ben Solomon, thus the 9th Karaite exilarch of the line of Anan ben David
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Hasdai Crescas (born c. 1340; died 1410/11), Jewish philosopher and halakhist (teacher of Jewish law)
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Hasdai ibn Shaprut (born c. 915; died 970 or 990), Jewish physician, diplomat, and patron of science
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Solomon ben Hasdai, the son of Hasdai ben Hezekiah
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