They are the Women in Black.

A pair of Government Accountability Office workers nicknamed the “Alien Girls” are touring military bases in an attempt to interview purported UFO witnesses, The Post has learned.

The non-partisan legislative-branch agency launched its probe of UFO disclosures and claims it is reviewing the practices of previous executive-branch alien investigators.

Two investigators from GAO are being dubbed “the alien girls” as they tour military bases around the country seeking out witnesses to UFO sightings. Jack Forbes / NY Post Design

The two unidentified female investigators quickly move from formalities in the interviews to directly asking if their subject has witnessed unexplained craft , sources with direct knowledge of the interviews said.

They also offer their interviewees a classified setting where they can share their out-of-this-world tales, sources said.

Some of those interviewed questioned whether the GAO alien girls had high enough clearance to hear the classified…