Johann Michael Raich (Ottobeuren in Bavaria, 17 January 1832 – Mainz, 28 March 1907) was a Catholic theologian.
Raich pursued his high school gymnasial studies under the Benedictines at St. Stephen's in Augsburg, and studied philosophy and theology at the Collegium Germanicum in Rome (1852-5).
In the autumn of 1859 he left Rome and went to Mainz as secretary of Bishop von Ketteler.
After the death of Bishop von Ketteler, during the years of the "Culture clash" Kulturkampf, Raich had a position in the episcopal Chancery.
Raich's writings include: Besides these original works he edited the following: After the death of Johann Baptist Heinrich and Christoph Moufang, Raich was editor of "Der Katholik" from 1891 to 1907.