The 2021–22 3. Liga (Slovakia) season was the 29th edition of the third tier [[3. Liga (Slovakia) annual football competition since its establishment in 1993. 66 teams contested being divided into three geographic groups of 16 teams: 3. liga Bratislava, 3. liga Západ (West), 3. liga Stred (Central), 3. liga Východ (Eastern); except group (Západ) composed of 18 teams.
Updated to match(es) played on unknown. Source: Soccerway Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Head-to-head away goals scored; 5) Play-off. (R) Relegated; (X) ?; (Y) Best remain in the 3. Liga (Slovakia)
Updated to match(es) played on unknown. Source: Soccerway Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Head-to-head away goals scored; 5) Play-off. (C) Champions; (P) Promoted; (R) Relegated; (X) Assured of the Possible Relegation; (Y) Best remain in the 3. Liga (Slovakia)
Updated to match(es) played on unknown. Source: Soccerway Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Head-to-head away goals scored; 5) Play-off. (R) Relegated; (X) ?; (Y) Best remain in the 3. Liga (Slovakia)
Východ (Eastern)
Changes
The following teams have changed division since the 2020–21 season:
Updated to match(es) played on unknown. Source: Soccerway Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Head-to-head away goals scored; 5) Play-off. (C) Champions; (P) Promoted; (R) Relegated; (X) At worst reach the possible relegation; (Y) Best remain in the 3. Liga (Slovakia)