Oak Ridge Boys
Oak Ridge Boys & Blackwood Brothers
Oak Ridge Boys & Stamps Quartet
Oak Ridge Boys & the Harvesters
Oak Ridge Boys & the Jordanaires
Oaks Band
Oasis Worship
Oceans Above
Ocean's Edge
Odes of Solomon
Of One Accord
Ohman Brass
Old Fashioned Revival Hour Choir
Old Fashioned Revival Hour Quartet
Old Friends Quartet
Old Paths
Old Paths Trio
Old Time Gospel Hour Quartet
Old Time Gospel Hour Trio
Old Time Preachers Quartet
Olivia Collingsworth
Ollis Family
Omega
Omega Quartet
One Accord
One Focus
One Voice
One Way
O'Neill Brothers
OneVoice
Onul Kim
Opryland Gospel Quartet
Ordained
Original Singing Wills Family
Orla Fallon
Orrells
Otis Skillings
Our Daily Bread
Our Father's Four
Out of Eden
Ovation Chorale
Ovation Orchestra
Ovid Young
Oxendines
Ozark Harmony Boys