Saint-Jammes (; ) is a commune in the Pyrénées-Atlantiques department in south-western France. Its name in Béarnais is Sén-Yàmmẹ or Sén-Yàmbẹ.
The commune is bordered by Higuères-Souye, Gabaston, Maucor, Bernadets and Morlaàs (to the south).
An industrial zone is present near the public school. There is a tobacco bar.
In 2007 the unemployment rate was 6.9% against 10.1% in 1999, with pre-retirees and retirees representing 14.9% of the population (11.1% in 1999) and a rate of activity of 59.1% (58.2 in 1999).
Saint-Jammes has the distinction of not having a church.
The 17th stage of the Tour de France 2007 passed through the commune on 26 July. Over the course of 188 kilometers it connected Pau to Castelsarrasin. It has a general sports centre (Aime Capdeboscq). There is also a bowling ground, a floodlit football field as well as tennis court.
The commune has a public elementary school.