The Order of the Visitation of Holy Mary (Latin: Ordo Visitationis Beatissimae Mariae Virginis), abbreviated VSM and also known as the Visitandines, is a Catholic religious order of Pontifical Right for women. Members of the order are also known as the Salesian Sisters (not to be confused with the Salesian Sisters of Don Bosco) or, more commonly as the Visitation Sisters.

The Order of the Visitation was founded in 1610 by Francis de Sales and Jane Frances de Chantal in Annecy, Haute-Savoie, France. At first, the founder had not a religious order in mind; he wished to form a congregation without external vows, where the cloister should be observed only during the year of novitiate, after which the sisters should be free to go out by turns to visit the sick and poor. The Order was given the name of The Visitation of Holy Mary with the intention that the sisters would follow the example of Virgin Mary and her joyful visit to her kinswoman Elizabeth, an event celebrated in Christianity as "The Visitation".

De Sales invited Jane de Chantal to join him in establishing a new type of religious life, one open to older women and those of delicate constitution, that would stress the hidden, inner virtues of humility, obedience, poverty, even-tempered charity, and patience, and founded on the example of Mary in her journey of mercy to her cousin Elizabeth. The order was established to welcome those not able to practice austerities required in other orders. Instead of chanting the canonical office in the middle of the night, the sisters recited the Little Office of the Blessed Virgin Mary at half-past eight in the evening. There was no perpetual abstinence nor prolonged fasting. The Order of the Visitation of Mary was canonically erected in 1618 by Paul V who granted it all the privileges enjoyed by the other orders. A bull of Urban VIII solemnly approved it in 1626.

The special charism of the Visitation Order is an interior discipline expressed primarily through the practice of two virtues: humility and gentleness. The motto of the order is "Live Jesus".

A foundation was established in Lyons in 1615 followed by Moulines (1616), Grenoble (1618), Bourges (1618), and Paris (1619). When Francis de Sales died (1622) there were 13 convents established; at the death of Jane Frances de Chantal in 1641 there were 86. The order spread from France throughout Europe and to North America. As of 2021^[update], there are about 150 autonomous Visitation monasteries throughout the world.

The Order of the Visitation has been present in Portugal since 1784, maintaining today three monasteries: in Braga, in Vila das Aves and in Batalha. The Sisters of the Visitation in Portugal produce and distribute the emblems of the Sacred Heart of Jesus (like devotional scapulars) as Margaret Mary Alacoque did in the past.

At the French Revolution in 1789 when all the religious houses were suppressed many of the French Sisters took refuge in other Catholic countries. The sisters in Rouen, northern France, fled to Portuguese monasteries, having only escaped the guillotine by the death of Robespierre in 1794. In 1803 six sisters left Lisbon in an English packet ship and while at sea they were attacked by French pirates. They were spared because of their nationality (they were French not English) and were returned safely to the Spanish seaport of Vigo. After a brief sojourn in Spain three of the Sisters made a second attempt to cross from Porto and without further encounters with pirates arrived in Falmouth on 29 January 1804. They later journeyed to Acton and founded the first monastery of the Visitation on English soil on 19 March 1804. They subsequently re-located to Waldron.

In 1835, the Order of the Visitation of Holy Mary of Dietramszell acquired Beuerberg Abbey (Kloster Beuerberg), in Eurasburg, Germany. Between 1846 and 1938 they ran a girls' school and a home for nursing mothers at Beuerberg Abbey, and afterwards an old people's convalescent home. The abbey still belongs to the Order of the Visitation of Holy Mary.