Jacob Niclas Ahlström (5 June 1805 in Visby, Gotland – 14 May 1857 in Stockholm) was a Swedish Kapellmeister and composer.

Beginning his studies at Uppsala University in 1824, Ahlström dropped out due to lack of money and joined a touring theatrical troupe.

[1] Ahlström composed two operas based on libretti by Frans Hedberg, incidental music (for plays such as Agne, Positivhalaren, Ringaren i Notre Dame, and Hinko och Urdur), a vocal symphony, chamber music, and lieder.

Together with Per Conrad Boman, he published Svenska folksånger, folkdanser och folklekar, the best-known collection of Swedish folk songs which appeared during the 19th century.

In 1852, he also published the Musikalisk fickordbok (Musical Pocket Book), which enjoyed several reissues.