S. Monicus I is a planetary body in Federation space, in the Alpha or Beta Quadrant. S. Monicus I is the location of an annex of the Galactic Historical Archives of the Federation.

Upon the retirement of Starfleet Captain James T. Kirk, many logs of the starship USS Enterprise were transcribed for the Archives on S. Monicus I by archivist Alan Dean Foster. (TAS - Star Trek Logs novelizations: Star Trek Log One, Star Trek Log Two, Star Trek Log Three, Star Trek Log Four, Star Trek Log Five, Star Trek Log Six, Star Trek Log Seven, Star Trek Log Eight)