President Joe Biden will honour his commitment to make an African-American woman his first nomination to the Supreme Court, the White House says.
She would replace the liberal justice, Stephen Breyer, who is expected to retire at the end of the current Supreme Court term in June.
His retirement plans are yet to be officially confirmed.
Justice Breyer’s replacement would not shift the court’s current 6-3 conservative majority.
“The president has stated and reiterated his commitment to nominating a black woman to the Supreme Court and certainly stands by that,” White House Press Secretary Jen Psaki told a news conference.
Only two African Americans – both men – have ever served on the court: Justice Thurgood Marshall from 1967 to 1991 and his successor Justice Clarence Thomas, who is set to become the oldest member on the bench at age 73.
Ketanji Brown Jackson, 51, a former law clerk to Mr Breyer, is believed to be the top contender for the job.
Ms Jackson was confirmed last June to a seat on the US Circuit Court of Appeals for the District of Columbia, in which she succeeded current Attorney General Merrick Garland.
Leondra Kruger, 45, who serves on the California Supreme Court, is another possibility.
Another tipped contender is J Michelle Childs, a judge on South Carolina’s federal court.