Diederich Krug (25 May 1821 – 7 April 1880) was a German pianist and composer.
He was born in Hamburg and studied under Jacob Schmitt.
He wrote a large number of pieces for piano, around 350 in all, which were popular with amateur pianists.
Typical examples are gathered in the Pianoforte-Album which appeared as No.
1220 in the Collection Litolff; it contains eight works: Chant d'Adieu (Op.