Power of Attorney for Keki Mistry

This filing is an Exhibit 24, a Power of Attorney granted by Keki Mistry, Non-Executive (Non-Independent) Director of HDFC Bank Ltd., to Dhanjit Thaivalappil and other officers of the bank. The power of attorney authorizes the appointed individuals to act on Mr. Mistry's behalf in all matters related to his reporting requirements with the U.S. Securities and Exchange Commission (SEC). This includes obtaining necessary credentials for electronic filing, executing Forms 3, 4, and 5, managing his EDGAR account, and obtaining information about transactions in the Bank's securities. The filing also notes that this Form 3 is being filed late due to administrative delays in obtaining EDGAR filing credentials. The power of attorney remains in effect until Mr. Mistry is no longer required to file these forms, unless revoked earlier.