| Tytianna | A variant of the name Tatiana. |
| Tytti | A Finnish form of Gertrude. |
| Tyvin | Gift of the sea |
| Tyyni | A Finnish name meaning serene. |
| Tyyra | A Finnish form of the name Tyra. |
| Tzanio | A Greek name meaning gracious. |
| Tzeni | A Greek form of the name Jane. |
| Tzigana | A name meaning gypsy woman. |
| Tzortzina | A Greek form of Georgina. |
| Tzvika | A Hebrew name meaning my deer. |
| Raahini | A name meaning a traveler or path. |
| Radar | A system for detecting objects. |
| Raddix | A name meaning root or foundation. |
| Radix | Latin word meaning root or source. |
| Raigad | A royal fort in Maharashtra, India. |
| Raiv | A name meaning wealth or prosperity. |
| Rajgir | The royal house of ancient kings. |
| Rajhansi | One who is like a royal swan. |
| Rajnigandha | A fragrant nightblooming flower. |
| Rakhshak | One who acts as a protector. |
| Raks | A short form meaning protection. |
| Raksheeta | One who is protected by divinity. |
| Rakshini | A female guardian or protector. |
| Rakshun | A protector or guardian figure. |
| Ramesses | Born of the god Ra, the sun. |
| Rameswaram | Lord of Rama, a sacred place. |
| Ramman | The roaring god of the storm. |
| Ranunculus | Little frog, a bright flower. |
| Rapunzel | A plant with edible roots. |
| Rara | Something rare or uncommon. |
| Rasalas | The honey of the mango fruit. |
| Rasgulla | A sweet syrupfilled ball. |
| Rativar | The day of the love goddess. |
| Ratnadeva | A lord of precious jewels. |
| Rattana | A name meaning crystal gem. |
| Ravinandini | Daughter of the sun god. |
| Raze | To level or demolish fully. |
| Razor | A sharp tool for shaving hair. |
| Redwood | A tall, giant forest tree. |
| Reika | A name meaning lovely flower. |