| Steven Caldwell | |
 Steven Caldwell | |
| Species: | Human |
| Gender: | Male |
| Homeworld: | Earth |
| Birthplace: | Earth |
| Affiliation: | Federation, Starfleet, Starfleet Marine Corps Atlantis Expedition |
| Family | |
| Marital Status: | Single |
| Career | |
| Occupation: | Starfleet officer, Starfleet Marine officer |
| Assignment: | Commanding officer, USS Daedalus (2379-present) |
| Rank: | Colonel |
| Insignia: |  
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- "Well, I have to warn you that I'm a career military strategist."
- — Steven Caldwell
Steven Caldwell is a male Human who is a Colonel in the Starfleet Marine Corps and the commanding officer of the USS Daedalus.