Who's clinched?

The following teams have clinched bids to the 2021 NCAA Division III football playoffs. Twenty-seven conferences receive automatic bids, with five at-large bids. The NESCAC does not participate in postseason play in football.

ARC: Central
ASC: Mary Hardin-Baylor
CC: Muhlenberg
CCC: Endicott
CCIW: North Central (Ill.)
E8: Cortland
ECFC: Anna Maria
HCAC: Rose-Hulman
LL: RPI
MAC: Delaware Valley
MASCAC: Framingham State
MIAA: Albion
MIAC: St. John's
MWC: Lake Forest
NACC: Aurora
NCAC: DePauw
NEWMAC: Springfield
NJAC: Salisbury
NWC: Linfield
OAC: Mount Union
ODAC: Washington & Lee
PAC: Carnegie Mellon
SAA: Trinity (Texas)
SCIAC: Redlands
UMAC: Greenville
USAC: Huntingdon
WIAC: UW-Whitewater