Dello di Niccolò Delli (ca. 1403 - ca. 1470), also known as Dello Delli, as Dello di Niccolò and as Dello, was an Italian (Florentine) sculptor and painter. His father was a tailor named Nicholò of Dello, and his mother was Monna Orsa. Painters Nicola Delli and Sansone Delli were his less famous younger brothers. In 1424, Nicholò of Dello was sentenced to death for abandoning his post and fled to Siena with his family. In 1427, the family fled again―this time to Venice. From 1430 to 1433, Dello di Niccolò Delli is known to have been in Florence. From 1433 to 1445 he lived in Spain, working in the Court of King Juan II of Castile, where he was knighted.