Family name Glastra Van Loon (Glastra Van Loon 
) , in all the world, is a very rare cognomen. The family name Glastra Van Loon is characteristic of Western Europe, particularly Netherlands, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Glastra Van Loon | Netherlands |
|
jan glastra van loon Dutch jurist and politician (1920-2001), NL (b. 1920) |
|