Martin Rinkart
[Image:Martin Rinckart.jpg|thumb|Martin Rinkart (1586–1649)]
Martin Rinkart, or Rinckart was a German Lutheran clergyman and hymnist. He is best known for the text to "Nun danket alle Gott" which was written c. 1636. It was set to music by Johann Crüger about 1647, and translated into English in the 19th century by Catherine Winkworth.
Rinkart was a deacon at Eisleben and archdeacon at Eilenburg, where he was born and also died. He served there during the Thirty Years' War and a severe plague in 1637.
Hymns
Nun danket alle Gott- 'Rinkart' is the name of a tune written by Johann Sebastian Bach for the hymn 'Christ is the world's true Light' by G. W. Briggs.