Christoph Sonnleithner (28 May 1734 in Szeged, Hungary – 25 December 1786 in Vienna, Austria) was an Austrian jurist and composer.

Sonnleithner studied legal science at the University of Vienna where he graduated with a doctorate.

Sonnleithner was appointed as Dean of the Juridical Faculty at the University of Vienna,[1] and had thus the office of the court judge of the Scottish Abbey, the College of the Scots.

[2] As a composer, Sonnleithner was in contact with Joseph Haydn and Wolfgang Amadeus Mozart.

He composed 36 string quartets, all dedicated to Joseph II, Holy Roman Emperor, several symphonies and various church music.