Neupetershain (Sorbian languages: Nowe Wiki, pronounced [ˈnɔwɛ ˈwʲikʲi]) is a municipality in the Oberspreewald-Lausitz district, in Lower Lusatia, Brandenburg, Germany.

From 1815 to 1947, Neupetershain was part of the Prussian Province of Brandenburg. From 1952 to 1990, it was part of the Bezirk Cottbus of East Germany.

Neupetershain: Population development
within the current boundaries (2013)

Year Pop. ±% p.a. 1875 562 —     1890 603 +0.47% 1910 2,557 +7.49% 1925 2,862 +0.75% 1933 3,085 +0.94% 1939 3,238 +0.81% 1946 3,657 +1.75% 1950 3,822 +1.11% 1964 3,060 −1.58% 1971 2,843 −1.05% 1981 2,401 −1.68% 1985 2,266 −1.44% 1989 2,176 −1.01% 1990 2,105 −3.26% 1991 2,019 −4.09% 1992 2,000 −0.94% 1993 1,990 −0.50% 1994 1,961 −1.46% 1995 1,940 −1.07% 1996 1,874 −3.40%

Year Pop. ±% p.a. 1997 1,849 −1.33% 1998 1,846 −0.16% 1999 1,851 +0.27% 2000 1,827 −1.30% 2001 1,797 −1.64% 2002 1,717 −4.45% 2003 1,670 −2.74% 2004 1,642 −1.68% 2005 1,613 −1.77% 2006 1,553 −3.72% 2007 1,515 −2.45% 2008 1,473 −2.77% 2009 1,464 −0.61% 2010 1,433 −2.12% 2011 1,372 −4.26% 2012 1,314 −4.23% 2013 1,277 −2.82% 2014 1,246 −2.43% 2015 1,254 +0.64% 2016 1,229 −1.99%