Biache-Saint-Vaast is a commune in the Pas-de-Calais department in the Hauts-de-France region in northern France.

A small farming and light industrial town located 8 miles (13 km) east of Arras, on the banks of the Scarpe river, at the junction of the D42, D43 and D46 roads. The A26 autoroute passes by just yards from the commune. Biache-Saint-Vaast station has rail connections to Arras and Douai.

Historical population

Year	Pop.	±% p.a.
1968	3,860	—
1975	4,224	+1.30%
1982	4,032	−0.66%
1990	3,981	−0.16%
1999	3,923	−0.16%
2007	3,872	−0.16%
2012	3,985	+0.58%
2017	4,083	+0.49%
2019	4,305	+2.68%
Source: INSEE

• The church of St. Pierre, rebuilt, as was much of the town, after the ravages of World War I.
• The war memorials.
• An archaeological site of a Stone Age settlement of the Mousterian culture, with finds showing signs of the Levallois technique.

• Charles Delestraint, general and member of the French Resistance

• Communes of the Pas-de-Calais department

• Vivre Mieux à Biache
• The CWGC graves at Biache-Saint-Vaast