Thermalbad Wiesenbad is a municipality in the district of Erzgebirgskreis, in Saxony, Germany.

From 1952 to 1990, Thermalbad Wiesenbad was part of the Bezirk Karl-Marx-Stadt of East Germany.

On 3 October 1990 the population of the present-day municipality Thermalbad Wiesenbad was 4169. The following figures show the population on 31 December of the corresponding year.

1993 – 3938 1994 – 3919 1995 – 3939 1996 – 3897 1997 – 3910

1998 – 3937 1999 – 3925 2000 – 3920 2001 – 3872 2002 – 3876

2003 – 3844 2004 – 3814 2005 – 3783 2006 – 3710 2007 – 3674

2009 – 3587 2012 – 3490 2013 – 3453

Source: Statistical Office of the Free State of Saxony