The Vallombrosians are a monastic religious order in the Catholic Church. They are named after the location of their motherhouse founded in Vallombrosa, situated 30 km from Florence on the northwest slope of Monte Secchieta in the Pratomagno chain. They use the postnominal abbreviation OSBVall to distinguish themselves from other Benedictines, who generally use the abbreviation OSB.

Vallombrosa is a Benedictine abbey in the comune of Reggello, about 30 km south-east of Florence, in the Apennines, surrounded by forests of beech and firs. It was founded by Florentine nobleman Giovanni Gualberto in 1038 and became the mother house of the Vallumbrosan Order.