QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

(1)

Registration Statements (Form S-3 Nos. 333-157646 and 333-154826) of AECOM Technology Corporation, and



(2)

Registration Statements (Form S-8 Nos. 333-167047 and 333-142070) pertaining to various stock incentive, purchase and retirement plans of AECOM Technology Corporation;

of our reports dated November 13, 2013, with respect to the consolidated financial statements and schedule of AECOM Technology Corporation and the effectiveness of internal control over financial reporting included in this Annual Report (Form 10-K) of AECOM Technology Corporation for the year ended September 30, 2013.

/s/ ERNST & YOUNG LLP

Los Angeles, California
November 13, 2013

QuickLinks

EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm