Johann Krieger (28 December 1651 – 18 July 1735) was a German composer and organist, younger brother of Johann Philipp Krieger. Born in Nuremberg, he worked at Bayreuth, Zeitz, and Greiz before settling in Zittau. He was one of the most important keyboard composers of his day, highly esteemed by, among others, George Frideric Handel. A prolific composer of church and secular music, he published several dozen of his works, and others survive in manuscript. However, hundreds more were lost when Zittau was destroyed by fire in 1757, during the Seven Years' War.
Krieger's keyboard music places him among the most important German composers of his time. The two published collections, Sechs musicalische Partien (1697) and Anmuthige Clavier-Übung (1698), contain harpsichord suites, organ toccatas, fugues, ricercars, and other works. Krieger's contemporaries praised his contrapuntal skill, evident in the extant fugues and ricercars. Johann Mattheson was particularly impressed with Krieger's double fugues, remarking that he knew nobody who surpassed Krieger in this form, except Handel. Handel himself admired and studied Krieger's work, even taking a copy of Anmuthige Clavier-Übung with him to England.