Millwall will kick off the season at home for the third time in five seasons under Neil Harris.
Previous opening days have seen victories over Shrewsbury (2015/16) and Oldham (2016/17), a draw to Middlesbrough (2018/19) and a loss to Nottingham Forest (2017/18).
This campaign, Preston will be the Lions' first opponents - five seasons after Millwall last won on the opening day in the Championship, against Leeds.
August is a busy month with at least seven fixtures including the Carabao Cup 1st Round with the potential for an eighth if the Lions progress. The draw takes place tonight at 7pm.
Preston's trip to South East London is followed by an away match at The Hawthorns, Sheffield Wednesday visiting The Den and then a midweek away match against Fulham.
That relatively short away trip is directly followed by one of the longest of the season, Middlesbrough, before a home fixture against Hull rounds off the month to head into the first international break.
September sees just three matches, or possibly four if Millwall reach the Carabao Cup 3rd Round for a second consecutive season.
These are against Blackburn, QPR and relegated Huddersfield.
October will be a month for Millwall fans to look forward to with a trip to Luton as well as home games against both Leeds and Cardiff, with Brentford and Stoke also providing opposition.
The following month sees a reunion with South London rivals Charlton after a trip to Reading, with trips to both Swansea and Birmingham also part of a busy schedule, alongside a home match against Wigan in midweek.
In December, Millwall will take on Nottingham Forest, Bristol City and Derby before the busy Festive period begins.
The Lions will take on Barnsley at The Den in their last pre-Christmas match, with a trip to Cardiff on Boxing Day and home match against Brentford closing out 2019.
The New Year will begin with a home game against Luton, followed by an FA Cup 3rd Round tie (TBC), a trip to Stoke, home fixture against Reading and a trip to Leeds. Last time the Lions faced Leeds away in January, they went on to equal the club record for consecutive away wins in 2017/18.
February is another busy month with seven games, starting with a trip to Sheffield Wednesday. Millwall then take on West Brom, Fulham, Preston, Wigan, Birmingham and Bristol City.
March sees just the one midweek game away to Barnsley after a trip to Nottingham Forest and home game versus Derby, before the Lions take on Swansea to round out the month.
The Lions will make the short trip to The Valley to kick off April, with four further fixtures in the month before May's solo game sees Millwall take on Huddersfield at The Den in an early kick off to finish their 2019/20 campaign (assuming that they do not finish in the play-off places).
Match timings and dates are subject to change due to TV selections which will be announced in due course.
The following matches fall on weekends of FA Cup rounds and, as such, are also subject to change:
25th January - Leeds away (4th Round weekend)
21st March - Swansea home (Quarter Final weekend)
18th April - Blackburn home (Semi-Final weekend)
Background image: Millwall FC