The Bengals have never won the Super Bowl. They lost to the 49ers in 1981 & 1989.
Super Bowl XVI: 49ers 26, Cincinnati Bengals 21
The Bengals never won a Super Bowl
1982 (Super Bowl XVI) They played the Cincinnati Bengals in Pontiac MI and won 26-21
The Cincinnati Bengals have never won the Super Bowl. They have played in two of them, XVI (1981) and XXIII (1988), both of which they lost to the San Francisco 49ers (26-21, 20-16 respectively).
Seahawks Panthers or Bengals
nope but 2 appearances
Despite appearances in Super Bowls XVI and XXIII (both times against the San Francisco 49ers), the Cincinnati Bengals have never won an NFL championship.
The Jacksonville Jaguars, the Houston Texans, the Cleveland Browns, and the Detroit Lions have never been featured in a Super Bowl, let alone win one.