Firefighters were called to the 2300 block of Good Hope Court off Good Hope Road around 7:30 p.m. on Monday.
When they arrived, they found one person with a gunshot wound outside the apartment.
Police said two other women were found shot inside the apartment.
Wanda Wright, 48, and Ebony Wright, 32, both of Southeast, died from their injuries.
Firefighters also located a three-month-old baby in the apartment.
Anyone with information is asked to contact D.C. police at 202-727-9099 or text the department’s tip line at 50411.
A map of the area where it happened is below.
WTOP’s Laura Spitalniak contributed to this report.