Baby Names Boy Names Meaning of the Name Rui Updated January 13, 2026 by Jennifer M. Rui Gender: Male Origin: Spanish Meaning: Famous Ruler ♥ Add to my Namelist What is the meaning of the name Rui? The name Rui is primarily a male name of Spanish origin that means Famous Ruler. Short form of Rodrigo.People who like the name Rui also like: Julius, Alphonse, Maximo, Mateo, Adrian, Rafael, Sebastian, Delilah, Bianca, Alicia, Cielo, Luna, Rhiannon, Lucia Names like Rui: Ryuu, Rory, Roro, Ryu, Ree, Rae, Rio, Ryo, Ryuhei, Reier, Reia, Ray, Ruya, Rhory, Ruri, Rai, Rawya, Raya, Rey, Roe, Rowa, Rea, Roy, Rorah, Riya, Rayya, Roi, Ria, Riye, Ruairi Stats for the Name Rui Rui is currently not in the top 100 on the Baby Names Popularity Charts Rui is currently not ranked in U.S. births