As of the end of the 2017-18 season (Super Bowl 53), 12 NFL teams have never won a Super Bowl.
There are 8 teams that have been to the Super Bowl (in years shown) and lost each time:
4
5
None
Through Super Bowl XLIV, 1, the 2001 New England Patriots that defeated the St. Louis Rams in Super Bowl XXXVI.
playoff winners
Ddgu
28 ... the only 4 teams to never play in a Super Bowl are the Cleveland Browns, Detroit Lions, Houston Texans, and Jacksonville Jaguars.
9
Dallas cowboys
28 of the 32 NFL franchises have made it to the Super Bowl. The final four with out a Super Bowl appearance are: Cleveland Browns, Detroit Lions, Jacksonville Jaguars and the Houston Texans.
steelers
Texans,Browns