| On The Last Day |
24 |
| On The Might Of Princes |
6 |
| On thorns i lay |
6 |
| On&On |
3 |
| Once & Future King |
9 |
| Once Blue |
11 |
| Once Lost Pictures |
6 |
| Once Tiros |
12 |
| Onda Vaga |
5 |
| Onda Vaselina |
33 |
| One |
49 |
| One 2 Many |
11 |
| One Amazin' Kid |
11 |
| One And Done |
4 |
| One Candle Power |
3 |
| One Chance |
34 |
| One Day As A Lion |
6 |
| One Direction |
149 |
| One Dollar Short |
35 |
| One Dove |
5 |
| One Eskimo |
12 |
| One Eyed Doll |
5 |
| One Fate |
7 |
| One Fine Day |
8 |
| One For The Team |
6 |
| One Giant Leap |
8 |
| One Glimpse Away |
3 |
| One Hand Clappers |
6 |
| One Hit Wonder |
8 |
| One Hour Photo |
9 |
| One Hundred And 21 |
17 |
| One Last Breath |
3 |
| One Less Reason |
43 |
| One Man Army |
42 |
| One Man Army And The Undead Quartet |
16 |
| One Match Left |
11 |
| One Minute Silence |
46 |
| One More Girl |
3 |
| One Morning Left |
3 |
| One Nation Crew |
14 |
| One Night Only |
36 |
| One Of These Days |
3 |
| One Piece |
14 |
| One Republic |
30 |
| One Second 2 Late |
9 |
| One Side Smile |
3 |
| One Star Story |
4 |
| One Step Behind |
3 |
| One Step Too Many |
4 |
| One Tree Hill |
17 |
| One True Thing |
16 |
| One True Voice |
3 |
| One Vo1ce |
25 |
| One Voice |
44 |
| One Way |
16 |
| One Way Destruction |
5 |
| One Way Letter |
5 |
| One Way Ride |
7 |
| One Way System |
41 |
| One Way To Kansas |
3 |
| One Without |
18 |
| One Worship |
15 |
| One-21 |
6 |
| One-Eyed Doll |
7 |
| One-t |
9 |
| OneRepublic |
90 |
| OneRepublic [Waking Up (deluxe version), 2009] |
4 |
| Oneida |
4 |
| Oneiroid Psychosis |
12 |
| Onelight |
10 |
| Onelinedrawing |
59 |
| Onerepublic |
5 |
| Onesidezero |
17 |
| Onesto Jennifer |
4 |
| Only Crime |
17 |
| Only Living Witness |
8 |
| Only Son |
9 |
| Onslaught |
25 |
| Onward |
4 |
| Onze |
3 |
| Ookla The Mok |
32 |
| Oompa Loompa Cast |
3 |
| Oomph! |
154 |
| Oonagh |
14 |
| Opal |
14 |
| Open Air Stereo |
5 |
| Open Hand |
28 |
| Open Space |
4 |
| Openfire |
5 |
| Opera IX |
7 |
| Opera Ix |
9 |
| Opera Magna |
6 |
| Operacion Triunfo |
11 |
| Operación Triunfo |
5 |
| Operation |
3 |
| Operation Ivy |
48 |
| Operator Please |
27 |
| Opeth |
125 |
| Ophelia |
6 |
| Ophelie Winter |
3 |