Yusuf Biscaino, also Ahmad b. Abd Allah al-Hayti al-Maruni (), was a Morisco in the service of the Moroccan Sultan Mulay Zidan.

He was sent as an ambassador to the Low Countries in 1610-11.European converts to Islam in the Maghreb by Mercedes García Arenal p.211

He met with Prince Maurice of Nassau who inquired to him about Islamic opinions on Jesus. He preferred not to answer on the spot, but later sent a letter to Maurice After returning to Marrakesh, Yusuf Biscaino sent the letter in Latin to Maurice in 1611, relying as a source on the work of Muhammad Alguazir.

See also Morocco-Netherlands relations

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