Singet dem Herrn ein neues Lied (Sing a new song to the Lord),[1] BWV 190,[a] is a church cantata by Johann Sebastian Bach.

He adapted it in 1730 to Singet dem Herrn ein neues Lied, BWV 190a, for the celebration of the bicentennial of the Augsburg Confession.

In his Christmas Oratorio of 1734, Bach dedicated the complete Part IV for New Year's Day to the naming of Jesus, told in the one verse from the Gospel of Luke, first performed on 1 January 1735.

A concerto Singet dem Herrn is concluded by the liturgical melody of "Herr Gott, dich loben wir" in unison, a choral fugue "Alles was Odem hat" (Everything that has breath) is concluded by a similar "Herr Gott, wir danken dir", the final section Halleluja is a shortened reprise of the first.

The following alto aria is dance-like and simple, the duet is accompanied by an obbligato instrument which may be oboe d'amore or violin.