1998 U.S. Men's Clay Court Championships
Date	April 20–27
Edition	30th
Category	World Series
Draw	32S / 16D
Prize money	$264,250
Surface	Clay / outdoor
Location	Orlando, Florida, U.S.
Champions
Singles
Jim Courier[1]
Doubles
Grant Stafford / Kevin Ullyett[2]
← 1997 · U.S. Men's Clay Court Championships · 1999 →

The 1998 U.S. Men's Clay Court Championships was an Association of Tennis Professionals men's tennis tournament held in Orlando, Florida in the United States and played on outdoor clay courts that was part of the World Series of the 1998 ATP Tour. It was the 30th edition of the tournament and was held from April 20 to April 27, 1998. Third-seeded Jim Courier won the singles title.

Jim Courier defeated Michael Chang 7–5, 3–6, 7–5

• It was Courier's only title of the year and the 28th of his career.

Grant Stafford / Kevin Ullyett defeated Michael Tebbutt / Mikael Tillström 4–6, 6–4, 7–5

• It was Stafford's 1st title of the year and the 2nd of his career. It was Ullyett's 2nd title of the year and the 3rd of his career.

• Association of Tennis Professionals (ATP) – tournament profile