Commodore
Commodore was the lowest flag officer rank, above captain but below rear admiral.

Starfleet ranks denoting commodore were used on the . ()

In 2364, several commodores issued commands in mission orders to starship captains. These orders were read by Lieutenant Commander Data in the android's investigation into a suspected conspiracy among the higher members of Starfleet Command. ()

In 2366, Geordi La Forge sarcastically referred to his Romulan captor, Centurion Bochra, as "commodore," to which Bochra eventually corrected La Forge as to his proper name and title. ()

Commodore Oh served as director of Starfleet Security in 2399. ()

Notable Starfleet commodores 
 Robert April
 Barstow
 Richard K. Berman (Starfleet Command, 2364)
 Peter Bryce (Advanced Technologies Division, 2364)
 Matthew Decker ()
 Anna Dixon (Starfleet Operational Support Division, 2364)
 Enwright (Starbase 6)
 Maxwell Forrest (Earth Starfleet, 2143)
 Joshua Jae (Starfleet Mission Operations Division)
 Bill Marafe (Starbase 55)
 José I. Mendez (Starbase 11)
 Oh (Chief of Starfleet Security, 2399)
  (Yorktown)
 Probert
 Stocker (Starbase 10)
  (Starbase 11)
 Toki (Starfleet Advanced Technologies Division, 2364)
 Travers (Cestus III outpost)
 Bob Wesley ()

Appendices

Background information 
The first mention and appearance of the rank of commodore in  occurred in the episode .

Robert Blackman's production notes during  described this rank as "1 star commodore", though it is the only rank with no insignia described or depicted. 

The  labeled this rank as "commodore" referring to the  and , and "admiral, one star" referring to its use on , , and .

The Star Trek: The Next Generation Technical Journal (p. 35) depicted a 2360s commodore's rank insignia as five gold pips.

A  article on commodores suggested that "a commodore was essentially a senior captain," and that the rank had "become defunct" in the 24th century. () A later article on Starfleet rank insignia (2270s-2340s) mistakenly depicts this insignia as a silver circle with a single gold arrow pointing to the center. ()

In the United States Navy, the rank of commodore has been phased out (although its use as a title remains for a senior captain who commands a group of ships.)

Apocrypha 
In Before Dishonor, Captain Mackenzie Calhoun informs Captain Picard that, since he is in command of a group of starships, it would be proper for him to be referred to as Commodore Picard rather than Captain Picard. The rank also features prominently in the novel , where the rank of commodore is held by a future version of Data. Benjamin Sisko is referred to as a Commodore in  by Charlie Reynolds.

Several non-canon reference manuals, among them the Star Trek: The Next Generation Officer's Manual, describe a five collar pip commodore insignia in use during the 24th century.

Commodore is one of the ranks held by Federation admirals , Bullock, and Savar in the video game Star Trek: Conquest.

In the alternate reality-set 2013 video game , Commodore  is the commander of 's starbase.

External links 
 
 Commodore at Memory Beta, non-canon Star Trek Wiki

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Military ranks