Family name Janulan (Janulan 
) , globally, is a very rare cognomen. The surname Janulan is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Very seldom, Janulan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janulan | Philippines |
Rose, China, Lymwel, Richard, and Demetrio Jr