Alonso Lobo (February 25, 1555 (baptised) – April 5, 1617) was a Spanish composer of the late Renaissance. Although not as famous as Tomás Luis de Victoria, he was highly regarded at the time, and Victoria himself considered him to be his equal.

Lobo’s music combines the smooth contrapuntal technique of Palestrina with the sombre intensity of Victoria. Some of his music also uses polychoraltechniques, which were common in Italy around 1600, though Lobo never used more than two choirs (contemporary choral music of the Venetian schooloften used many more — the Gabrielis often wrote for as many choirs as there were choir-lofts at St Mark’s Basilica). Lobo was influential far beyond the borders of his native Spain: in Portugal, and as far away as Mexico, for the next hundred years or more he was considered to be one of the finest Spanish composers.