Arizona Cardinals (1947)
Atlanta Falcons (NW: 1965)
Baltimore Ravens (2012-13)
Buffalo Bills (AFL 1964)
Carolina Panthers (NW: 1995)
Chicago Bears (1985-86)
Cincinnati Bengals (NW: 1968)
Cleveland Browns (1964)
Dallas Cowboys (1995-96)
Denver Broncos (2015-16)
Detroit Lions (1957)
Green Bay Packers (2010-11)
Houston Texans (NW: 2002)
Indianapolis Colts (2006-07)
Jacksonville Jaguars (NW: 1995)
Kansas City Chiefs (2023-24)
Las Vegas Raiders (1983-84)
Los Angeles Chargers (AFL 1963)
Los Angeles Rams (2021-22)
Miami Dolphins (1973-74)
Minnesota Vikings (NW: 1961)
New England Patriots (2018-19)
New Orleans Saints (2009-10)
NY Football Giants (2011-12)
NY J-E-T-S Jets Jets Jets (1968-69)
Philadelphia Eagles (2024-25)
Pittsburgh Steelers (2008-09)
San Francisco 49ers (1994-95)
Seattle Seahawks (2024-25)
Tampa Bay Buccaneers (2020-21)
Tennessee Titans (AFL 1961) (as Houston Oilers)
Washington Commanders (1991-92)
Conclusions:
Longest since title: Cardinals (79 years and two cities ago) and Lions (69 years).
Never Won: Six teams. Vikings oldest (going on 65 years)