You Do Need power plug adapter while traveling from United States Virgin Islands to Cyprus.

Here is Why You Need An Adapter

The outlet and plug type used in Cyprus is G and in United States Virgin Islands are A and B. This is how they look like.

United States Virgin Islands

In United States Virgin Islands, outlets of type A and B are in use.

Type A

Type B

Cyprus

In Cyprus, outlets of type G are in use.

Type G