- Once Upon a Time in Space
TV-14 | Science/Documentary
- Orca vs. Great White
TV-14 | Nature/Special
- Outlaw Tech
TV-14 | Science/Technology
- On the Water
NR | Science/Educational
- Outdoor Idaho
NR | Outdoors/Documentary
- The Origami Code
NR | Science/Documentary
- Outdoor Journal
NR | Outdoors/Nature
- Our Way of Life
NR | Nature/Fishing
- Outback Adventures
NR | Outdoors/Nature
- Oops I Changed the World
NR | Science
- Origins
NR | Science/Religious
- Once Lab
NR | Science/Educational
- One Way Astronaut: Dying 33 Million Miles From Home
NR | Science/Special
- Oddities: San Francisco
NR | Science
- Our Violent Sun
NR | Science/Special
- Operation Ouch!
NR | Science/Medical