Moritz Ludwig George Wichmann (1821 – 1859) was a German astronomer.
He was an ardent observer of minor planets.
A student of Friedrich Bessel, he observed with the famous Königsberg heliometer.
In 1853 he published a determination of the parallax of Groombridge 1830.The asteroid 7103 Wichmann and the Wichmann crater on the Moon were named in his honour.