Esteban Rodriguez was a Starfleet officer in the 23rd and 24th centuries.
In 2267, Lieutenant Rodriguez served as a science officer on the USS Enterprise under Captain James T. Kirk. That year, he was a member of the landing party assigned to explore Beta Omicron Delta III. (TOS episode: "Shore Leave")
In 2268, Rodriguez was manning the science station on the bridge when the Enterprise hit a series of subspace distortions while en route to Mu Aurigon V. (TOS novel: A Choice of Catastrophes)
In 2311, Captain Rodriguez was recorded in Starfleet records as being in command of the USS Agamemnon. (TLE novel: Serpents Among the Ruins)