| Onyx Creacion Divina ft. Arcangel | No Diras Que No | — | 94 | Reggaeton | Flow Factory | 2010 |
| Onyx Feat. Noreag & Big Pun | Shut 'em Down | Remix | 91 | Hip-Hop | Def Jam Music Group | 1998 |
| Oran 'Juice' Jones | The Rain | — | 109 | Urban | Def Jam | 2013 |
| Oran 'Juice' Jones | The Rain | Quick Edit* | 109 | Urban | Def Jam | 2013 |
| Orbo & The Longshots | Highway Tears | — | 100 | Country | Grappa/Rainmaker | 2012 |
| Organized Konfusion | Decisions | — | 90 | — | — | — |
| Organized Konfusion | Stress | — | 89 | — | — | — |
| Original Banda El Limon De Salvador Lizarraga | Hasta Mi Ultimo Dia | — | 62 | Banda | Fonovisa | 2011 |
| Original Cast Of SpongeBob SquarePants, The New Musical | (Just A) Simple Sponge | — | 75 | Top 40 | — | 2018 |
| Original Position ft. Nick Name | Physical | Extenz Club Mix | 135 | — | Fakey Records | 2004 |
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| Orion | Eternity | Darren Tate Remix | 136 | — | Incentive (uk) | 2000 |
| Orion Too Featuring Caitlin | Hope & Wait | Dj Euphorik Extended Club Mix | 140 | Breaks | Mostiko | 2002 |
| Orion Too Featuring Caitlin | Travelling | Extended Version | 140 | Trance | Mostiko | 2003 |
| Orion Too Featuring Caitlin | White Christmas | Rich's Club Mix | 140 | Trance | Mostiko | 2003 |
| Orlando Conga | La Lavadora | — | 169 | — | Lantigua Music | 2005 |
| Orlando Conga | Somo Asi | — | 125 | — | Unsigned | 2009 |
| Orlando Conga | Whoa | — | 134 | — | Lantigua Music | 2004 |
| Orquesta Antonetti | Lluvia | — | 100 | Salsa | M&A | 2008 |
| Orquesta Expresion Latina | De Que Sirvio | — | 102 | Salsa | Unsigned | 2012 |
| Orquesta Expresion Latina | Que Sera | — | 97 | Salsa | Unsigned | 2012 |
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| Orquesta SCC Salsa Con Conciencia | Dejala Que Baile | — | 105 | Salsa | Zonero/Cofrefi | 2013 |
| Orquesta Tabaco & Ron | Como Grita (Esa Mujer Mia) | — | 97 | Salsa | Dimelo | 2012 |
| Orquesta Tabaco Y Ron | Los Cueros De Tabaco Y Ron | — | 107 | — | Dimelo Records Latin Music Entertainment | 2005 |
| Orquesta Tabaco Y Ron | Tu De Bruja No Tienes Na'! | — | 97 | — | Dimelo Records! | 2006 |
| Oryon | I Will | L.E.X. Big Room Edit | 128 | — | Pulse Records | 2005 |