| Once Again | 6.20 | 2019 | Apr 24, 2019 | Drama |
| Office Romance | 6.41 | 2026 | Jun 04, 2026 | Romance |
| One Cut of the Dead | 7.60 | 2017 | Nov 04, 2017 | Comedy |
| One Last Shot | 7.50 | 2026 | Sep 22, 2026 | Action |
| One Piece: Baron Omatsuri and the Secret Island | 7.20 | 2005 | Mar 05, 2005 | Action |
| Original Sin | 6.16 | 2001 | May 08, 2001 | Thriller |
| Oldboy | 5.93 | 2013 | Nov 14, 2013 | Mystery |
| Oopiri | 7.20 | 2016 | Mar 25, 2016 | Drama |
| OnlyFans: Selling Sexy | 6.50 | 2021 | Feb 10, 2021 | Documentary |
| Obsession | 6.80 | 1949 | Aug 03, 1949 | Thriller |
| Only You | 6.73 | 1994 | Mar 04, 1994 | Romance |
| Office | 6.70 | 2026 | Jan 01, 1970 | - |
| Olympus Has Fallen | 6.42 | 2013 | Mar 20, 2013 | Action |
| Ombak Rindu | 6.20 | 2011 | Dec 01, 2011 | Drama |
| One Day | 7.42 | 2011 | Mar 02, 2011 | Drama |
| Odyssey | 5.60 | 2025 | Nov 07, 2025 | Thriller |
| Om Shanti Om | 7.11 | 2007 | Nov 07, 2007 | Comedy |
| Old | 6.32 | 2021 | Jul 21, 2021 | Thriller |
| Obsession | 6.29 | 2015 | Jun 04, 2015 | Romance |
| Once | 7.42 | 2007 | Mar 23, 2007 | Drama |
| One Night Only | 6.00 | 2016 | Jul 22, 2016 | Drama |
| Once Upon a Time in Anatolia | 7.47 | 2011 | Sep 23, 2011 | Drama |
| Officer on Duty | 7.00 | 2025 | Feb 20, 2025 | Crime |
| One Piece Film: GOLD | 7.20 | 2016 | Jul 23, 2016 | Action |
| Oblivion | 6.70 | 2013 | Apr 10, 2013 | Action |
| Obsession | 4.20 | 1997 | Aug 28, 1997 | Drama |
| Ocean's Eight | 6.94 | 2018 | Jun 07, 2018 | Crime |
| Oh..! Sukumari | 4.50 | 2026 | Jul 17, 2026 | Comedy |
| Omkara | 6.89 | 2006 | Jul 28, 2006 | Crime |
| Once More | - | 2026 | Jan 01, 1970 | Drama |
| O Kadhal Kanmani | 7.05 | 2015 | Apr 16, 2015 | Romance |
| Ong-Bak | 7.17 | 2003 | Jan 31, 2003 | Action |
| OnlyFans: Love for Sale | 3.00 | 2023 | Nov 14, 2023 | Documentary |
| Our Fault | 7.40 | 2025 | Oct 15, 2025 | Romance |
| Overflow | 4.20 | 2011 | Jun 02, 2011 | History |
| October | 7.00 | 2018 | Apr 13, 2018 | Drama |
| One Piece: Episode of Skypiea | 7.10 | 2018 | Aug 25, 2018 | Action |
| Official Secrets | 7.20 | 2019 | Aug 30, 2019 | Thriller |
| Other People's Mirrors | 4.50 | 2004 | Sep 25, 2004 | Drama |
| Omor Shongi | - | 2025 | Jan 31, 2025 | Romance |