| Meaning | regal, kingly |
| Origin | Portuguese |
| Gender | gender neutral |
| Opposite gender | Rui |
| Popularity | Moderate |
| Length | 3 |
| Syllables | 1 |
| Syllabification | Rui |
Rui delivers maximum impact with minimal letters. This streamlined choice represents modern naming philosophy at its finest—simple, elegant, internationally viable. The single syllable carries surprising weight, proving that brevity can equal strength. Rui works exceptionally well in our globalized world, easily pronounced across languages while maintaining cultural specificity. The name suggests someone direct, confident, and efficient—no unnecessary embellishment, just pure essence. Parents drawn to Rui typically value minimalism and clarity over elaborate decoration. The name pairs beautifully with longer middle names or surnames, providing balance in the complete name structure. Rui has Asian cultural connections while functioning seamlessly in Western contexts, offering true multicultural versatility. For families seeking something modern, clean, and distinctive without complexity, Rui represents refined simplicity that makes a statement through understatement rather than excess.
| Ruy |
| Rua |
| Ruie |
| Ruiz |
| Ruai |
| Ruey |
| Ruee |
| Rue |
| Ruih |
| Ruei |
| Ruhi |
| Rui Costa | Portuguese footballer |
| Rui Patricio | Portuguese footballer |
| Rui Hachimura | Japanese basketball player |
| Rui Veloso | Portuguese musician |
| Rui En | Singaporean actress |
| Rui Marques | Angolan footballer |
| Rui Pedro dos Santos Patrício | Portuguese footballer |
| Rui Pedro Silva | Portuguese long-distance runner |
| Rui Machado | Portuguese tennis player |
| Rui Barros | Portuguese footballer |
| Rui Vieira da Cunha | Brazilian composer |
| Rui Mota | Portuguese rally driver |
| Rui da Silva | Portuguese DJ and producer |
| Rui Águas | Portuguese footballer and manager |
| Rui Manuel César Costa | Portuguese footballer |
| Rui Gonçalves | Portuguese motocross rider |
| Rui Manuel Monteiro da Costa | Portuguese footballer |
| Rui Unas | Portuguese comedian and actor |
| Rui Nereu | Portuguese footballer |
| Rui Lopes | Portuguese futsal player |
| Rui Hanazawa | from "Kare Kano" |
| Rui Tachibana | from "Domestic Girlfriend" |
| Rui Kisugi | from "Cat's Eye" |
| Rui Ninomiya | from "Gatchaman Crowds" |
| Rui Hachiouji | from "Code:Breaker" |
| Rui Kaminaga | from "A Silent Voice" |
| Rui Yujin | from "Beelzebub" |
| Rui Mikage | from "Tsukuyomi - Moon Phase" |
| Rui Sasaki | from "Nana" |
| Rui Aiba | from "We Never Learn" |
| Rui Osano | from "Shaman King" |
| Rui Sakuragi | from "The Prince of Tennis" |
| Rui Aiming | from "The Asterisk War" |
| Rui Arneb | from "Chrome Shelled Regios" |
| Rui Sagisawa | from "Tokyo Xanadu" |
| Rui Yuzuha | from "Tokyo Ravens" |
| Rui Kanoya | from "World Trigger" |
| Rui Maita | from "Assassination Classroom" |
| Rui Shiromine | from "Masamune-kun's Revenge" |
| Rui Yashio | from "Robotics;Notes" |