Peter Johansen (de) Neergaard (24 July 1769 – 9 January 1835) was a Danish landowner.

Peter Johansen Neergaard was the owner of the estates Ringsted Abbey, Kærup (1793–1804), Merløsegaard (1795–1796), Gyldenholm (1810–1812), Førslev (1803–1830), Gunderslevholm (1803–1835), Kastrup, Fuglebjerggaard and Fodbygård (1803), Det Plessenske fideikommis (1803), Gerdrup (1814–1831), Lyngbygård (1814–1831), Fuglsang (1819–1835), Priorskov (1819–1835), Nørlund, Torstedlund (1820–1826) and Albæk (1812).

[3] He managed to get through the crisis of the 1820s with most of his estates and divided them between his sons from 1830 to 1835, He was a land commissioner (landvæsenskommissær) in Sorø County.

They married on 25 August 1794 in the French Reformed Church in Copenhagen.

Three children survived childhood: Neergaard's second wife was Anna Henriette Elisabeth Schow (1781–1859), a daughter of kancellideputeret Christen Schow (1738–1806) and Caroline Marie Suhr (1754–1824) and the widow of captain and kommerceråd Peter Christoffer Qvistgaard of Gerdrup and Lyngbygård, 1775–1807).