Back When I Knew It All is the sixth studio album by the American country music duo Montgomery Gentry.

The album's first release to country radio was its title track, co-written by Trent Willmon.

This song and "Now You're Talkin'" were co-written by Ira Dean, formerly bass guitarist in the group, Trick Pony.

"Now You're Talkin'" and "Long Line of Losers" (the fourth single) were previously recorded by Kevin Fowler on his 2007 album Bring It On, and "The Big Revival" was previously recorded by John Anderson on his 2000 album Nobody's Got It All, which Chancey also produced.

Church Congregation on "The Big Revival": Kent Agee, Diane Akin, Jayme Calhoun-Paulk, Katie Cleek, Ryan Cook, Mel Eubanks, Missy Evans, Chris Gillis, Chris Hennessee, Teresa Pitt, Daniel Rediger, Josh Van Valkenburg, Hannah Williams, Willetta Williams