Chapelle Notre-Dame-de-Toute-Aide de La Prénessaye, Protected heritage chapel in La Prénessaye, France.

Chapelle Notre-Dame-de-Toute-Aide stands in the hamlet of Querrien, in La Prénessaye. It is built of rough light-beige and grey stone under a steep grey slate roof, with a small octagonal spire and cross where the roof sections meet. Two large arched windows with dark leaded glass face the main wall, a smaller window with a dark red grille sits lower by a low buttress, and a round dark disc is mounted on the left wall. A taller tower with a pointed slate spire rises behind on the left.

The chapel was founded in 1652 by Denis de La Barde following reported apparitions at a spring. The site later became an important pilgrimage destination for people from the region.

The chapel honours Notre-Dame de Toute-Aide, the name given to the Virgin honoured here since the 17th century. On 14 August 1950 the wooden statue was crowned before 20,000 pilgrims, with a crown designed by Émile Daubé and made by the goldsmith René Desury, under the blessing of Pope Pius XII. Two great pardons, on 15 August and the Sunday after 8 September, each draw about 10,000 pilgrims, and a smaller pardon of the Rosary is held in early October.

The chapel stands in the hamlet of Querrien, in the commune of La Prénessaye in the Côtes-d'Armor. The two main pardons draw about 10,000 pilgrims each: on 15 August and on the Sunday after 8 September; a smaller pardon of the Rosary is held in early October. Since autumn 2023 three lay people commissioned by the diocese have welcomed pilgrims at the sanctuary.

The wooden statue of the Virgin and Child that Jeanne Courtel unearthed in 1652 was crowned on 14 August 1950 before 20,000 pilgrims; the crown was designed by Émile Daubé and made by the goldsmith René Desury, with the blessing of Pope Pius XII.