Chief

Chief (or jefe in the Spanish language) was a common designation for leading officers and enlisted personnel aboard Federation starships and installations.

When used as a title referring to an officer it denoted a member of positional authority, such as a staff officer, or department head status.

In reference to an enlisted person, it referred directly to rank. 

Titles

 * Chief Archon, a Cardassian judge
 * Chief astronomer
 * Chief city administrator
 * Chief conn officer, the primary helmsman/navigator of a starship
 * Chief cosmetics officer
 * Chief delegate
 * Chief engineering officer/chief engineer, head of the engineering department on a starship
 * Assistant chief engineer, second-in-command of the engineering department on a starship
 * Chief examiner
 * Chief exobiology specialist
 * Chief financial officer, a senior position in the Ferengi Alliance
 * Chief geologist, head of the geology department on a starship
 * Chief inspector/chief investigator
 * Chief medic
 * Chief medical officer/chief surgeon, head of the medical department on a starship
 * Chief morale officer
 * Chief of medicine
 * Chief of mining operations
 * Chief of operations, head of the operations
 * Chief of staff
 * Chief of Starfleet Intelligence, in charge of Starfleet Intelligence
 * Deputy Chief of Starfleet Intelligence
 * Chief of Starfleet Operations, in charge of Starfleet Operations
 * Chief of Starfleet Security
 * Chief of surgery
 * Chief officer
 * Chief processing engineer
 * Chief scientist
 * Chief security officer/Chief of security|/security chief/head of security, in charge of security on a starship or at a Starfleet facility
 * Chief tactical officer, in charge of Tactical stations on a starship
 * Chief thanatologist
 * Commander in chief, in charge of Starfleet/president
 * Section chief, head of a section on Starfleet vessels
 * Transporter chief, in charge of transporter operation

Ranks

 * Chief petty officer, rank given to senior non-commissioned officers, who have substantial experience and are considered experts in their specific profession.
 * Senior chief petty officer, a rank superior to chief petty officers and subordinate to master chief petty officers.
 * Master chief petty officer, highest enlisted rank, often given a great amount of responsibility and leadership roles, while subordinate to commissioned officers.

Šéf Chief チーフ Chief