| Cassie Chambers Armstrong | |
| State Senate: | Kentucky |
| District: | 19th |
| Term Start: | March 2, 2023 |
| Predecessor: | Morgan McGarvey |
| Office1: | Member of the Louisville Metro Council from the 8th District |
| Term Start1: | January 1, 2021 |
| Term End1: | February 21, 2023 |
| Predecessor1: | Brandon Coan |
| Successor1: | Benjamin Reno-Weber |
| Birth Date: | 30 September 1986 |
| Party: | Democratic |
| Residence: | Louisville, Kentucky, U.S. |
| Alma Mater: | Yale University (BA, MPH) London School of Economics (MS) Harvard Law School (JD)[1] |
Cassie Chambers Armstrong (born September 30, 1986) is an American politician who is a member of the Democratic Party representing District 19 in the Kentucky Senate since March 2, 2023.[2] A former member of the Louisville Metro Council, she served from January 1, 2021, until she won a special election on February 21, 2023, to fill the state Senate vacancy left by U.S. Representative Morgan McGarvey.[3] Outside of her legislative service, she is an assistant professor of law at the University of Louisville Brandeis School of Law.