Rudolf Frommer (fegyverneki Frommer Rudolf; 4 August 1868 – 1 September 1936) was a Hungarian weapon designer.

He was raised to the Hungarian nobility with the pre-name 'fegyverneki' by Franz Joseph I for his achievements in weapons design.

He had over 100 patents, among them semi-automatic handguns starting in 1901, and including the Frommer 1910 in 7.65mm Roth, the Frommer Stop in .32 ACP, and the 37M.

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