Spielfeld is a former municipality in the district of Leibnitz in the Austrian state of Styria. Since the 2015 Styria municipal structural reform, it has been part of the municipality of Straß in Steiermark.
It lies on Austria's southern border with Slovenia, opposite the Slovene town of Šentilj. Spielfeld was an Austria–Slovenia border crossing checkpoint until 21 December 2007, when all immigration and customs checks ended after Slovenia joined the Schengen Area.