- January 1 -
Molenlanden flag adopted.
- February -
Garnett flag adopted.
- February 4 -
Lombardy flag adopted.
- February 16 -
Park City flag adopted.
- February 19 - The redesign flag for Scottsdale is adopted. It was rescinded a month later.
- March 5 - Milford, Nebraska flag adopted.
- March 21 - West Chester flag adopted.
- April 8 - Ranger flag adopted.
- April 27 - Plainfield flag adopted.
- May - Manitou Springs flag adopted.
- May 28 - College Place flag adopted.
- June 3 - Silverton flag adopted.
- June 11 - Iowa flag modified.
- July 28 - Winooski flag adopted.
- August - Howard Lake flag adopted.
- August 1 - Green River flag adopted.
- August 15 - Butte flag adopted.
- August 20 - Manhattan, Kansas flag adopted.
- August 26 - Belarus flag modified.
- August 28 - Bangsamoro and Belize flags adopted/standardized.
- September 3 - Jenks flag adopted.
- September 6 - Scott flag adopted.
- September 10 - Anaheim flag readopted.
- September 14 - Ladakh banner adopted.
- September 27 - All 52 flags for the neighborhoods of Cincinnati were unveiled.
- October 14 - Des Moines flag readopted.
- October 20 - Paralympic Games flag adopted.
- November 7 - Durham flag modified.
- November 12 - Topeka flag adopted.
- December 6 - Lawrence flag adopted.
- December 10 - Crossville flag adopted.
- December 14 - Saint Vincent and the Grenadines flag adopted.
- Unknown - Aitkin, Amity, Glendale, North Hampton, Nur-Sultan, Palouse and West Plains flags adopted/modified.
