Interim head coach Scott Johnson said: "We've chosen this squad with two parameters uppermost in our minds: current form and looking to the future.
"Where two players have been vying for the one spot in areas such as the back-row, we've gone with the form option.
"This squad is for our training camp in Glasgow next week and we still have the option to add to it for the Six Nations."
Nineteen of the players in the squad are from Glasgow Warriors, who currently sit in second place in the RaboDirect PRO12 league.
Murray joined Warriors from Newcastle Falcons in November after spending the first part of the season on loan at Agen in France.
Since making his debut in November's narrow defeat at Harlequins, he has gone on to make six appearances for the club.
Scotland squad for training camp in Glasgow (January 20-23) ahead of RBS 6 Nations Championship
Backs: Peter Murchie*, Stuart Hogg, Sean Maitland*, Tommy Seymour*, Sean Lamont (all Glasgow Warriors), Tim Visser (Edinburgh Rugby), Max Evans (Castres), Matt Scott (Edinburgh Rugby), Alex Dunbar* Peter Horne*, Duncan Weir, Ruaridh Jackson (all Glasgow Warriors), Tom Heathcote (Bath Rugby), Henry Pyrgos, Sean Kennedy* (both Glasgow Warriors) and Greig Laidlaw (Edinburgh Rugby).
Forwards: Alasdair Dickinson (Sale Sharks), Ryan Grant, Dougie Hall, Pat MacArthur* (all Glasgow Warriors), Ross Ford (Edinburgh Rugby), Euan Murray (Worcester Warriors), Geoff Cross (Edinburgh Rugby), Moray Low, Alastair Kellock (both Glasgow Warriors), Richie Gray (Sale Sharks), Jim Hamilton (Gloucester), Grant Gilchrist* (Edinburgh Rugby), Kelly Brown (Saracens), Robert Harley, Ryan Wilson* (both Glasgow Warriors), Johnnie Beattie (Montpellier), David Denton (Edinburgh Rugby), Richie Vernon (Sale Sharks), Chris Fusaro* (Glasgow Warriors).
* = Uncapped.