Unnamed Romulans (23rd century)
The following is a list of unnamed Romulans who lived during the 23rd century.

Khitomer Conference attendees

Military personnel

Praetor  

The Praetor of the Romulan Star Empire in 2266 sponsored a bold and dangerous mission of the military to attack the United Federation of Planets. The Praetor ordered their flagship, a Romulan Bird-of-Prey under the command of a veteran officer, to cross the Neutral Zone and attack a series of Federation outposts.

Some members of the crew of the Bird-of-Prey had connections with the Praetor; one in particular was Decius, who sent the Praetor a message regarding the "glorious mission" after Earth Outpost Stations 2, 3, 4, and 8 had been destroyed. In actuality, by sending this message and breaking radio silence, Decius had inadvertently given away the Bird-of-Prey's position to the  and the Praetor's "finest flagship" was eventually hunted down and destroyed. ()

In an alternate timeline created by Christopher Pike avoiding his debilitating accident in 2266, the Neutral Zone Incursion of 2266 instead led to an encounter between Pike's , James T. Kirk's , and a Romulan fleet, having arrived subsequent to Decius' message, led by the Praetor herself, ultimately leading to the outbreak of a war that would still be going on after two decades and have killed millions. ()

Tarses' paternal grandfather 
The paternal grandfather of Simon Tarses was a closely held family secret. When enlisting, Tarses lied, saying on his Starfleet personnel application that his grandfather was Vulcan. 

In 2367, Sabin Genestra revealed the truth during Tarses' cross-examination. ()

fr:Romuliens inconnus (23ème siècle)
nl:Naamloze Romulans (23e eeuw)
 Romulans, Unnamed (23rd)