Giovanni Benedetto Sinibaldi (active second half of 17th century) was an Italian physician and author.
He is mainly known for a peculiar work, written in Latin, about sexual activity and afflictions, titled: First published in 1642 in Rome, and reprinted in 1649 in Frankfort, the work is a mixture of homily, mythology, potions and unguents, and classic poetry attempting to address issues of human and animal sexuality and love.
Sinibaldi refers to himself as an archiatrist (doctor and pharmacist) and professor of practical medicine in a Roman school (archigymnasio).
The book was somewhat raunchily satirized by the Irish-English author-bookseller Richard Head in a 1658 pamphlet titled: The cabinet of Venus unlocked, and her secrets laid open.
Being a translation of part of Sinibaldus, his Geneanthropeia, and a collection of some things out of other Latin authors, never before in English (London: Philip Briggs, 1658).