Abegweit Passage is the narrowest part of the Northumberland Strait, comprising the 13-kilometre wide portion between Borden-Carleton, Prince Edward Island and Cape Jourimain, New Brunswick. Tidal currents in this area can reach up to 4 knots. This portion of the strait is now spanned by the Confederation Bridge.

The word Abegweit is derived from the Mi'kmaq word for Prince Edward Island, Epekwit'k, meaning "cradled (or cradle) on the waves."