Global Business Travel (GBTG) S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We hereby consent to the use in this Prospectus constituting a part of this Registration Statement on Amendment No. 2 to Form S-4 of our report dated March 1, 2022, relating to the financial statements of Apollo Strategic Growth Capital, which is contained in that Prospectus. We also consent the reference to our Firm under the caption “Experts” in the Prospectus.

/s/ WithumSmith+Brown, PC

New York, New York

March 21, 2022