Livingston will be presented with the Ladbrokes League 1 trophy after Saturday's game against Peterhead at the Tony Macaroni Arena.
David Hopkin's side sealed the title with a 2-1 win over closest challengers Alloa Athletic on April 8 and can now look forward to Championship football again come August.
Livingston, who were also third-tier champions in 1998/99 and 2010/11, are on a run of seven straight victories and beat Queen's Park 4-0 at the weekend.
Previous League 1 champions
1994/95 Morton
1995/96 Stirling Albion
1996/97 Ayr United
1997/98 Stranraer
1998/99 Livingston
1999/00 Clyde
2000/01 Partick Thistle
2001/02 Queen of South
2002/03 Raith Rovers
2003/04 Airdrie
2004/05 Brechin City
2005/06 Gretna
2006/07 Morton
2007/08 Ross County
2008/09 Raith Rovers
2009/10 Stirling Albion
2010/11 Livingston
2011/12 Cowdenbeath
2012/13 Queen of South
2013/14 Rangers
2014/15 Morton
2015/16 Dunfermline Athletic
