Bad Saarow (Lower Sorbian: Zarow, pronounced [ˈzarɔw]; 1950–2002: Bad Saarow-Pieskow) is a municipality in the Oder-Spree district, in Brandenburg, Germany.

The place is known for its hot springs and for its mineral-rich mud. Their healing properties have attracted visitors for many years, and in 1923 led to the town's name acquiring the prefix Bad ("bath", "spa").

Nearby are the Dubrower Berge, a range of wooded hills popular with hikers and cyclists.

From 1815 to 1947, Bad Saarow was part of the Prussian Province of Brandenburg, from 1947 to 1952 of the State of Brandenburg, from 1952 to 1990 of the Bezirk Frankfurt of East Germany and since 1990 again of Brandenburg.

Bad Saarow: Population development
within the current boundaries (2013)

Year Pop. ±% p.a. 1875 1,253 —     1890 1,251 −0.01% 1910 1,426 +0.66% 1925 2,146 +2.76% 1933 2,335 +1.06% 1939 3,537 +7.17% 1946 3,577 +0.16% 1950 3,936 +2.42% 1964 4,125 +0.34% 1971 4,370 +0.83% 1981 4,465 +0.22% 1985 4,552 +0.48% 1989 4,633 +0.44% 1990 4,657 +0.52% 1991 4,613 −0.94% 1992 4,597 −0.35% 1993 4,650 +1.15% 1994 4,663 +0.28% 1995 4,622 −0.88% 1996 4,645 +0.50%

Year Pop. ±% p.a. 1997 4,654 +0.19% 1998 4,653 −0.02% 1999 4,693 +0.86% 2000 4,672 −0.45% 2001 4,660 −0.26% 2002 4,594 −1.42% 2003 4,595 +0.02% 2004 4,730 +2.94% 2005 4,793 +1.33% 2006 4,758 −0.73% 2007 4,842 +1.77% 2008 4,828 −0.29% 2009 4,791 −0.77% 2010 4,867 +1.59% 2011 4,929 +1.27% 2012 5,001 +1.46% 2013 5,006 +0.10% 2014 5,090 +1.68% 2015 5,251 +3.16% 2016 5,468 +4.13%

• Jörg Schönbohm (1937−2019, born in Neu Golm), former Lieutenant general of the Bundeswehr, 1999−2009 Minister of the Interior of the State of Brandenburg
• Cornelia Ernst (born 1956), politician (The Left)
• Marienetta Jirkowsky (1962−1980), death at the Berlin Wall
• Axel Schulz (born 1968), boxer
• Vivien Kussatz (born 1972), sailor
• Isabel Cademartori (born 1988), politician (SPD)
• Franziska Mietzner (born 1988), handball player