I believe every model of Volvo is available with a manual transmission.
That is not entirely true. Smaller model (C30, c40) do have a manual transmission options. Higer end models (S60, S80) do not (as of 2009 models). for the S80, for example, you get a 6 speed Geartronic transmission, that's it, no options.
The 2008 Volvo C70 has a 6-speed manual.
The 2008 Volvo C30 has a 6-speed manual.
The 2012 Volvo C30 has a 6-speed manual.
The 2001 Volvo S60 has a 5-speed manual.
The 2010 Volvo C70 has a 6-speed manual.
The 2004 Volvo S60 has a 5-speed manual.
The 2002 Volvo C70 has a 5-speed manual.
The 2009 Volvo C70 has a 6-speed manual.
The 2001 Volvo C70 has a 5-speed manual.
The 2005 Volvo S60 has a 5-speed manual.
The 2011 Volvo C30 has a 6-speed manual.
The 2007 Volvo C70 has a 6-speed manual.