The Greens/European Free Alliance (Greens/EFA) is a political group of the European Parliament composed primarily of green and regionalist political parties.

The 1999 European Parliament election was a European election for all 626 members of the European Parliament held across the 15 European Union member states on 10, 11 and 13 June 1999. The voter turn-out was generally low, except in Belgium and Luxembourg, where voting is compulsory and where national elections were held that same day. This was the first election where Austria, Finland and Sweden voted alongside the other member states, having joined in 1995 and voted separately. The next election was held in 2004.