Item 9A. Controls and Procedures.

Mid-America Apartment Communities, Inc.

(a) Evaluation of Disclosure Controls and Procedures

MAA is required to maintain disclosure controls and procedures, within the meaning of Exchange Act Rules 13a-15 and 15d-15. MAA’s management, with the participation of MAA’s Chief Executive Officer and Chief Financial Officer, carried out an evaluation of the effectiveness of MAA’s disclosure controls and procedures as of December 31, 2021. Based on that evaluation, MAA’s Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective as of December 31, 2021 to ensure that information required to be disclosed by MAA in its Exchange Act filings is accurately recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to MAA’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

(b) Management’s Report on Internal Control over Financial Reporting

MAA’s management is responsible for establishing and maintaining adequate internal control over financial reporting within the meaning of Exchange Act Rules 13a-15 and 15d-15. MAA’s management, with the participation of MAA’s Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness of MAA’s internal control over financial reporting as of December 31, 2021 based on the framework specified in Internal Control - Integrated Framework (2013) published by the Committee of Sponsoring Organizations of the Treadway Commission. Based on such evaluation, MAA’s management concluded that MAA’s internal control over financial reporting was effective as of December 31, 2021.

Ernst & Young LLP, the independent registered public accounting firm that has audited the consolidated financial statements included in this Annual Report on Form 10-K, has issued an attestation report on MAA’s internal control over financial reporting, which is included in this Annual Report on Form 10-K.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Therefore, even those systems determined to be effective can only provide reasonable assurance with respect to financial statement preparation and presentation.

(c) Changes in Internal Control over Financial Reporting

There was no change to MAA’s internal control over financial reporting, within the meaning of Exchange Act Rules 13a-15 and 15d-15, that occurred during the quarter ended December 31, 2021 that has materially affected, or is reasonably likely to materially affect, MAA’s internal control over financial reporting.

Mid-America Apartments, L.P.

(a) Evaluation of Disclosure Controls and Procedures

The Operating Partnership is required to maintain disclosure controls and procedures, within the meaning of Exchange Act Rules 13a-15 and 15d-15. Management of the Operating Partnership, with the participation of the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, carried out an evaluation of the effectiveness of the Operating Partnership’s disclosure controls and procedures as of December 31, 2021. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, concluded that the disclosure controls and procedures were effective as of December 31, 2021 to ensure that information required to be disclosed by the Operating Partnership in its in Exchange Act filings is accurately recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to the Operating Partnership’s management, including the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, as appropriate to allow timely decisions regarding required disclosure.

(b) Management’s Report on Internal Control over Financial Reporting

Management of the Operating Partnership is responsible for establishing and maintaining adequate internal control over financial reporting within the meaning of Exchange Act Rule 13a-15 and 15d-15. Management of the Operating Partnership, with the participation of the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, conducted an evaluation of the effectiveness of the Operating Partnership’s internal control over financial reporting as of December 31, 2021 based on the framework specified in Internal Control - Integrated Framework (2013) published by the Committee of Sponsoring Organizations of the Treadway Commission. Based on such evaluation, management of the Operating Partnership has concluded that the Operating Partnership’s internal control over financial reporting was effective as of December 31, 2021. An

attestation report of the independent registered public accounting firm of the Operating Partnership will not be required as long as the Operating Partnership is a non-accelerated filer.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Therefore, even those systems determined to be effective can only provide reasonable assurance with respect to financial statement preparation and presentation.

(c) Changes in Internal Control over Financial Reporting

There was no change to the Operating Partnership’s internal control over financial reporting, within the meaning of Exchange Act Rules 13a-15 and 15d-15, that occurred during the quarter ended December 31, 2021 that has materially affected, or is reasonably likely to materially affect, the Operating Partnership’s internal control over financial reporting.