奥思定会（Augustinians，或思定会），是遵行《圣奥斯定会规》生活的男女修会的总称。

奥思定会有2个主要分支：

The term Augustinians, named after Augustine of Hippo (354–430), applies to two separate types of Catholic religious orders and some Anglican religious orders. Within Anglicanism the Rule of St Augustine is followed only by women, who form several different communities of Augustinian nuns in the Anglican Communion. Within Roman Catholicism Augustinians may be members of either one of two separate and distinct types of Order: