Gladstone is a geographic parish in Sunbury County, New Brunswick, Canada.

Prior to the 2023 governance reform, for governance purposes it was divided between the villages of Fredericton Junction and Tracy and the local service district of the parish of Gladstone, all of which were members of Capital Region Service Commission (RSC11).

The parish was named in honour of William Ewart Gladstone, Prime Minister of the United Kingdom until his defeat shortly after the House of Assembly began its 1874 session.

Gladstone was erected in 1874 from Blissville Parish.

In 1896 the land boundary with Blissville was changed to run along grant lines and magnetic bearing,

Gladstone Parish is bounded:

• on the north by a line beginning at a point on the York County line about 3.3 kilometres southwesterly of Route 101, then running south 66º east to the Oromocto River;
• on the east and southeast by a line running up the Oromocto River and the South Branch Oromocto River to the northern line of a grant to Nathaniel Hubbard, which also serves as the southern boundary of Fredericton Junction, then southwesterly along the line to the rear of the grant, then southerly about 2.2 kilometres along the rear line of grants, then south 67º west to the Charlotte County line;
• on the south by the Charlotte County line;
• on the northwest by the York County line.

Communities at least partly within the parish; bold indicates an incorporated municipality

Bodies of water at least partly in the parish:

Islands in the parish:

• Curries Island
• MacGougans Island

Parks, historic sites, and other noteworthy places in the parish.

• Russel Dam

Parish population total does not include Fredericton Junction or Tracy

Highways and numbered routes that run through the parish, including external routes that start or finish at the parish limits:

• List of parishes in New Brunswick

45°37′01″N 66°45′11″W / 45.616919°N 66.75293°W / 45.616919; -66.75293 (Gladstone Parish, New Brunswick)