The name Robert is an ancient Germanic given name, from Proto-Germanic *Hrōþi- "fame" and *berhta- "bright" (Hrōþiberhtaz).[1] Compare Old Dutch Robrecht and Old High German Hrodebert (a compound of Hruod (Old Norse: Hróðr) "fame, glory, honour, praise, renown" and berht "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin.[2][3] It is also in use as a surname. Another commonly used form of the name is Rupert.
After becoming widely used in Continental Europe it entered England in its Old French form Robert, where an Old English cognate form (Hrēodbēorht, Hrodberht, Hrēodbēorð, Hrœdbœrð, Hrœdberð, Hrōðberχtŕ) had existed before the Norman Conquest. The feminine version is Roberta. The Italian, Portuguese, and Spanish form is Roberto.
Robert is also a common name in many Germanic languages, including English, German, Dutch, Norwegian, Swedish, Scots, Danish, and Icelandic. It can be used as a French, Polish, Irish, Finnish, Romanian, and Estonian name as well.
Bert, Bertie, Berto, Bertus (also short for Albert or Herbert)
Beto, Betinho (Portuguese)
Bo, Bob, Bobbie, Bobby
Beau
Chrodobert, Chrodobrecht (Frankish)
Dobbie, Dobby
Boris (Bulgarian) (possibly not etymologically connected, but linked together through nickname "Bob")
Hob, Hopkin (Medieval English)
Hopcyn (Welsh)
Hrodberaht, Hrodebert, Hrodpreht (Old High German)
Rab, Rabbie (Scots)
Raibeart (Scottish Gaelic)
Rhobert (Welsh)
Roibeárd, Riobárd (Irish)
Rob, Robb, Robbie, Robby (also short for Robin)
Rod
Robbe (Dutch, Frisian and Low German short form)
Roban
Robban (Swedish)
Robbert (Dutch)
Robbi, Hrobbi, Hrobjartur, Bjartur, Art (Icelandic)
Robercik or Robuś (Polish, "Little Robert")
Robere (Old French)
Ροβῆρος, Rovēros (Greek)
Róbert (Hungarian, Icelandic, Slovak)
Robertas (Lithuanian)
Roberto (Italian, Portuguese, Spanish)
Robertino (Italian, "Little Robert")
Robertinho (Portuguese, "Little Robert")
Роберт (Robert), Роман (Roman) (Russian)
Ροβέρτος, Rovértos (Greek)
Raivo (Estonian)
Roberts (Latvian)
Raivis (Latvian form of the Estonian variant)
Robertson (English given name)
Robertus (Latin)
Robetus (Medieval misspelling?)
Robi (Croatian, Hungarian, Romanian, Serbian)
Röbi (Swiss German)
Robin (Medieval diminutive in English, Dutch, Swedish)
Robo
Robrecht (Old Dutch)
Rochbert
Rodbeard, Rodbeart
Rodbert, Rodebert, Rotbert, Roteberht, Rotebert (Germanic)
Rodbertus, Rodepertus (Latin)
Rodebrecht (Old German)
Röpke (Low German diminutive form)
Rotbryht (Old English)
Rothbert
Roopertti, Pertti, Roope (Finnish)
Robertukka, Roopertukka, Tuukka (Finnish nicknames)
Ropars, Ropartz, Roparzh (Breton)
Ruben, Rupen, Roupen (Armenian)
Reuben (Hebrew)
Rutbert, Rubert, Ruby (Old Dutch)
Rudebet, Rudbert, Rudbert, Rudpert, Rudbrecht, Rudprecht
Rupert (Dutch, English, German, Polish)
Ruperto (Spanish)
Rupertus, Rvpertvs (Latin)
Rutpert, Ruppert, Rupprecht, Ruprecht (Upper German)
Trebor (reversal)
Feminine forms:
Bobbi, Bobbie
Robbi, Robbie
Roberta
Robertina, Robertine
Robina
Robyn, Robynne
Ruprette, Rupretta (archaic French)