MaryAnn Tierney
American government official
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MaryAnn Tierney is an American public servant, emergency management professional, and former Federal Emergency Management Agency (FEMA) official.
MaryAnn Tierney | |
|---|---|
Official portrait, 2025 | |
| Acting United States Deputy Secretary of Homeland Security | |
| In office January 20, 2025 – January 28, 2025 | |
| President | Donald Trump |
| Preceded by | Kristie Canegallo (acting) |
| Succeeded by | Benjamine Huffman (acting) |
| Personal details | |
| Education | American University (BA), New York University (MA) |
Education
Tierney attended American University and earned her master's degree from New York University.[1]
Career
Tierney spent 15 years at FEMA.[2] In 2010, Tierney was named the FEMA Regional Administrator for Region III, which includes Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and Washington, DC.[1]
Tierney also served as the Senior Coordinating Official for the Southwest Border Coordination Center in 2022.[3]
Tierney left FEMA in May 2025 in a major leadership shake-up that included more than a dozen senior executives.[4] Since leaving the agency, Tierney has spoken out about mismanagement and under-resourcing under the Trump administration.[2][5]
Tierney currently works with the Southeastern Pennsylvania Transportation Authority (SEPTA), overseeing control center operations, and played an instrumental role in ensuring organizational preparedness during the 2026 FIFA World Cup.[6][7]