The 1998 RCA Championships was a tennis tournament played on outdoor hard courts. It was the 11th edition of the event known that year as the RCA Championships, and was part of the Championship Series of the 1998 ATP Tour. It was the 11th edition of the tournament and took place at the Indianapolis Tennis Center in Indianapolis, Indiana, United States. Àlex Corretja won the singles event and Jiří Novák / David Rikl won the doubles title.
See main article: 1998 RCA Championships – Singles. 
Àlex Corretja defeated 
Andre Agassi 2–6, 6–2, 6–3
See main article: 1998 RCA Championships – Doubles. 
Jiří Novák / David Rikl defeated Mark Knowles / 
Daniel Nestor 6–2, 7–6