Brian Sicknick, a police officer who died during the pro-Trump siege of the US Capitol on 6 January, will lie in honour at the same location.
Sicknick 42, was injured while "physically engaging with protesters", police said. He died the following day.
He was one of five people to lose their lives in the riot, which led to Donald Trump's second impeachment.
House Speaker Nancy Pelosi and Senate Majority Leader Chuck Schumer said he would lie in honour in the Capitol.
"The US Congress is united in grief, gratitude and solemn appreciation for the service and sacrifice of Officer Brian Sicknick," they said in a statement.
"The heroism of Officer Sicknick and the Capitol Police force during the violent insurrection against our Capitol helped save lives, defend the temple of our democracy and ensure that the Congress was not diverted from our duty to the Constitution.
"His sacrifice reminds us every day of our obligation to our country and to the people we serve."