Cognomen Sandjaja (Sandjaja 
) , in the entire world, is quite a rare last name. The surname Sandjaja is habitual in Indonesia, where it is quite a rare surname, Singapore, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Indonesia, Australia, and Germany. Much less frequently, Sandjaja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sandjaja | Australia, Germany, United States, Indonesia, China |
|
richardus kardis sandjaja Indonesian Catholic priest and martyr, ID (b. 1914) |
|
| sandjaja darmawan Indonesian politician (born 1953 in Padang), ID (b. 1953) |
|
Mr, Eric, Erny, Hery, Ivan, Iwan, Olly, Yudi, Maria, Marco, Eddy, Santy, Sally, Sisca, Selni, Andre, Andry, Angki, Anita, Agata, Agoes, Sandy, Toto, Lulu, Lela, Roy, Leo, Lea, Edy, Eka, Ita, Oei, Alex, Andi, Andy, Anto, Anom, Anro, Agus, Audy, Budi, Raya, Riya, Riyo, Rudy, Dede, Aulia, and Celia