This is an incomplete list of March for Our Lives events that took place on March 24, 2018. The official March for Our Lives event in Washington, D.C., attracted a turnout of between 200,000 to 800,000 on March 24, 2018. This is a partial list. Overall turnout was estimated to be between 1.2 and 2 million people in the United States, making it one of the largest protests in American history.

United States Listed below are locations where there have been rallies or marches in the U.S. in support of the March for Our Lives.

State Photo Approximate attendance Notes In Washington, D.C., an estimated 200,000 to 800,000 people attended the "standing-room-only rally" on Pennsylvania Avenue.In a March 24, 2018 article, Time magazine reported the estimate by event organizers as about 800,000 people, as did NBC News and The Hill. At that time police officials had not released an official crowd size estimate. Law enforcement had "prepared for 500,000." The Time article also said that the event "brought downtown Washington to a standstill...[f]rom the foot of the Capitol to the White House more than a mile west, Pennsylvania Avenue and its tributaries". Speakers included Marjory Stoneman Douglas students Cameron Kasky, David Hogg, and Emma González.

The New Yorker's Margaret Talbot, who attended the event, said that its most remarkable aspect was its inclusiveness, not just its extraordinary, impressive size and "consistent demand for a ban on assault-style weapons, or the focus on defeating politicians who take money from the National Rifle Association."