The Symphony No. 33 in C major (Hoboken I/33) is a festive symphony by Joseph Haydn. The precise date of composition is unknown. Haydn scholar H.C. Robbins Landon has dated this work to 1763–65. It has also been suggested that it was written in 1760 or 1761, along with Symphony no. 32.

Date of composition 1761 (1760-1761)
First published 1768
Type Symphony
Tonality C Major
Catalogue Hob. I:33
Approx. duration 22 minutes
Instruments Orchestra
Autotranslations beta Joseph Haydn: Symphonie n°33 en do majeur, Hob. I:33
Franz Joseph Haydn: Sinfonia n. 33 in do maggiore, Hob. I:33
Joseph Haydn: Sinfonie Nr. 33 C-dur, Hob. I:33