Kestner is a German surname. Notable people with the surname include:
(Georg Christian) August Kestner (1777, Hanover - 1853), German antiquarian and diplomatKestner-Museum, Hanover, Germany, founded in 1889kestnergesellschaft, an art gallery in Hanover, Germany, founded in 1916Boyd Kestner (born 1964), American actorCharles Kestner (1803 - 1870), German-French chemist and politicianCharlotte Kestner, née Buff (1753 - 1828), wife of Johann Christian KestnerHermann Kestner (1810 - 1890), German composerJohann Christian Kestner (1741 - 1800), German jurist and archivustLars Kestner, American author of financial textsPaul Kestner, founded the Kestner company in 1902, now part of the GEA Group