Bernardino Baldi (5 June 1553 – 10 October 1617) was an Italian mathematician, poet, translator and priest.

He pursued his studies at Padua, and is said to have spoken about sixteen languages during his lifetime, though according to Tiraboschi the inscription on his tomb limits the number to twelve.

Shortly afterwards he was called to act as tutor to Ferrante Gonzaga, from whom he received the rich abbey of Guastalla.

He is said to have written upwards of a hundred different works, the chief part of which have remained unpublished.

His various works show his abilities as a theologian, mathematician, geographer, antiquary, historian and poet.