well connected; having a wide circle of acquaintances
Describes a person who knows many people across different circles. Often used positively, but can imply superficial breadth. Related form: 顔の広い (attributive).
See also: 顔の広い
He's well connected, so he'll introduce you to someone good.
顔が広い人は、仕事でも有利だ。
People with a wide circle of acquaintances have an advantage in business, too.