Francis John (Frank) Wiercinski (born November 19, 1956)[1] is a retired United States Army officer who was the Commander United States Army Pacific (USARPAC).

On December 20, 1989, then Captain Wiercinski, Company Commander of Bravo Company, 3/75 Ranger Regiment, led his rangers during a night-time combat jump into Rio Hato, Panama during Operation Just Cause, assisting in the regiment's successful seizure of the airfield.

He was previously the Deputy Commander for Support, of the Multinational Division North, Iraq.

During Operation Anaconda (2002), in Afghanistan, Wiercinski (then a colonel) was commander of the 187th Infantry Regiment (a. k. a.

[3] He previously held a job as Senior Vice President and Managing Director of Asia-Pacific Region, Cubic Global Defense before joining Raytheon in 2020 as their Vice President for Missile Defense Requirements and Capabilities.