J P Morgan Exchange-Traded Fund Trust - Sustainable Municipal Income Etf Fund (JMSI) N-CSRCertified annual shareholder report (management investment company)

I have reviewed this report on Form N-CSR of the JPMorgan Active Growth ETF, JPMorgan Active Small Cap Value ETF, JPMorgan Active Value ETF, JPMorgan Equity Focus ETF, JPMorgan Equity Premium Income ETF, JPMorgan Market Expansion Enhanced Equity ETF, JPMorgan Nasdaq Equity Premium Income ETF and JPMorgan U.S. Tech Leaders ETF (the “Fund”), a series of J.P. Morgan Exchange-Traded Fund Trust (the “Registrant”);

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the Funds as of, and for, the periods presented in this report;

The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the Funds and have:

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Funds, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provided reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

Evaluated the effectiveness of the Funds’ disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

Disclosed in this report any change in the Funds’ internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

The Registrant’s other certifying officer and I have disclosed to the Funds’ auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

All significant deficiencies and material weakness in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Funds’ ability to record, process, summarize, and report financial information; and

Any fraud, whether or not material, that involves management or other employees who have a significant role in the Funds’ internal control over financial reporting.

I have reviewed this report on Form N-CSR of the JPMorgan Active Growth ETF, JPMorgan Active Small Cap Value ETF, JPMorgan Active Value ETF, JPMorgan Equity Focus ETF, JPMorgan Equity Premium Income ETF, JPMorgan Market Expansion Enhanced Equity ETF, JPMorgan Nasdaq Equity Premium Income ETF and JPMorgan U.S. Tech Leaders ETF (the “Fund”), a series of J.P. Morgan Exchange-Traded Fund Trust (the “Registrant”);

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the Funds as of, and for, the periods presented in this report;

The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the Funds and have:

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Funds, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provided reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

Evaluated the effectiveness of the Funds’ disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

Disclosed in this report any change in the Funds’ internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

The Registrant’s other certifying officer and I have disclosed to the Funds’ auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

All significant deficiencies and material weakness in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Funds’ ability to record, process, summarize, and report financial information; and

Any fraud, whether or not material, that involves management or other employees who have a significant role in the Funds’ internal control over financial reporting.