Walter Pfrimer was an Austrian politician and leader of the Heimwehr in Styria. He was the leader of a failed putsch in 1931.

The Heimwehr or Heimatschutz was a nationalist, initially paramilitary group that operated in the First Austrian Republic from 1920 to 1936. It was similar in methods, organization, and ideology to the Freikorps in Germany. The Heimwehr was opposed to parliamentary democracy, socialism and Marxism and fought in various skirmishes against left-wing and foreign groups during the 1920s and 1930s. Some of its regional groups also opposed Nazism while others favored it. In spite of its anti-democratic stance, the Heimwehr developed a political wing called the Heimatblock that was close to the conservative Christian Social Party and took part in both the cabinet of Chancellor Carl Vaugoin in 1930 and in Engelbert Dollfuss' right-wing government from 1932 to 1934. In 1936 the Heimwehr was absorbed into what was at the time the only legally permitted political party in Austria, the Fatherland Front, and then later into the Frontmiliz, an amalgamation of militia units that in 1937 became part of Austria's armed forces.