The news, which was first reported Wednesday by ESPN's Tim Kurkjian, was later confirmed by a source to MLB.com.
Showalter was rumored to be in the mix for the Orioles job ever since the organization dismissed Dave Trembley on June 4. When contacted by MLB.com at the beginning of the Orioles' last homestand, Showalter said the Orioles had not approached him about the job but that he would be open to listening to what they had to say.
Showalter is a former manager with the Yankees, D-backs and Rangers and has compiled a 882-833 record and two Manager of the Year awards. He had no comment on the situation when reached by phone Wednesday evening.
Showalter would be the third candidate owner Peter Angelos and president of baseball operations Andy MacPhail have reportedly considered for the job, joining Eric Wedge and Bobby Valentine. MacPhail said Monday he would be "very surprised" if the Orioles reach a decision prior to the All-Star break and reiterated that there is no timetable to name Trembley's permanent replacement. In the meantime, interim manager Juan Samuel will continue to lead a beleaguered 18-48 O's squad.