Calamos Investments
2020 Calamos Court
Naperville, IL 60563

September 1, 2009

BY EDGAR

Mr. Larry Greene
Division of Investment Management
Securities and Exchange Commission
100 F Street, N.E., Room 4700
Washington, D.C. 20549

Calamos Global Dynamic Income Fund
Registration Statement on Form N-2
File Nos. 333-153443 and 811-22047

Dear Mr. Greene:

     In accordance with Rule 461 of the General Rules and Regulations under the Securities Act of 1933, as amended, Calamos Global Dynamic Income Fund (the “Fund”) hereby requests acceleration of the effective date of the above-captioned Registration Statement so that it will become effective by 10:00 a.m., Eastern Time, on September 3, 2009 or as soon thereafter as practicable.