John Adam Rittinger (16 February 1855 – 29 July 1915) was a Canadian German-language newspaper proprietor, editor and Pennsylvania German humorist. In 1875, he and Aaron Eby purchased Walkerton, Ontario's German-language newspaper, the Walkerton Glocke. Affectionately known by locals as the "Glockemann" ("Bell Ringer"), Rittinger was both a shrewd businessman and a popular writer. He became the paper's sole owner in 1878, renaming it Die Ontario Glocke in 1882. A staunch conservative, he used the editorial column to comment on domestic political issues, advocating for the National Policy, individual freedoms and the teaching of the German language in Ontario schools while opposing prohibition and nativism. When the Glocke amalgamated into Berlin, Ontario's Berliner Journal in 1904, he beca