| Tro | Derived from the French word for three or triplet. |
| Tugdual | Derived from the Breton word for good or noble. |
| Turiau | Derived from the Breton word for lord or noble. |
| Turn | One who works at a lathe machine. |
| Tysen | Son of the poet or fire brand. |
| Roarke | Renowned Champion, Illustrious |
| Raban | A name meaning raven or crow. |
| Radik | A Turkish name meaning 'radical' or 'innovative' |
| Raemondo | Counsellor; Protector |
| Raimonds | Well-advised Protector |
| Rainerio | Meaning wise army or counselor. |
| Ralphy | Wise and Strong |
| Ramiero | Powerful in Battle |
| Ramonde | Counsellor; Protector |
| Randulfus | Wolf ruler, a strong and powerful name with Germanic origins. |
| Ranees | Foreigner, a name with Arabic and Persian roots, meaning outsider. |
| Rawlings | Famous Landowner |
| Reiko | A name meaning lovely child. |
| Rejinaldo | Meaning a wise, powerful ruler. |
| Rembert | Bright fame, a name with Germanic origins, meaning famous and shining. |
| Reynel | Counselor, a name with French and Germanic roots, meaning advisor. |
| Reynir | Army; Counsel; Advice; Warrior |
| Rezo | Swift, a name with Arabic and Turkish origins, meaning quick and agile. |
| Rheinallt | Meaning a powerful, wise ruler. |
| Rhon | Strong, a name with Welsh and Celtic roots, meaning powerful and robust. |
| Riberto | Brilliant Because of his Power |
| Richerd | Meaning a brave, strong ruler. |
| Rigaberto | A bright and famous ruler. |
| Rigo | A shortened form of famous ruler. |
| Rikar | A powerful and brave leader. |
| Riqui | Rich - Powerful Ruler |
| Ritcherd | A brave and powerful ruler. |
| Ritsherd | A strong and bold leader. |
| Rizieri | Army of the Leader |
| Robertas | Famously or Bright Famous |
| Rodito | Famously Powerful |
| Rodriquez | Son of the famous ruler. |
| Rodryk | Famous Ruler; Variant of Roderick |
| Roeland | Renowned in the Land |
| Roffe | Famous or Legendary Wolf |