Saint-Paul-d'Oueil (French pronunciation: [sɛ̃ pɔl dwɛj]; Gascon: Sent Pau d'Oelh) is a commune in the Haute-Garonne department in southwestern France.

The average annual rainfall is 989.6 mm (38.96 in) with May as the wettest month.

The temperatures are highest on average in August, at around 17.0 °C (62.6 °F), and lowest in January, at around 3.2 °C (37.8 °F).

The Château de Saint-Paul-d'Oueil is a 16th-century castle which is listed as a historic site by the French Ministry of Culture.

This Haute-Garonne geographical article is a stub.