The Terriers are entering their second season in the Premier League having triumphed in the Championship play-offs 2016-17 and will look to put more points between them and the bottom three.
Wagner was busy in the summer transfer window welcoming nine new players to the squad, mostly all with undisclosed fees.
Goal brings you your complete guide to the Terriers' 2018-19 pre-season and Premier League fixtures, with dates, venues and all you need to know.
Huddersfield 2018-19 squad numbers
|17||MF||Rajiv van La Parra|
|25||DF||Mathias 'Zanka' Jorgensen|
|27||DF||Jon Gorenc Stankovic|
Huddersfield 2018-19 transfer activity
Wagner has made several signings ahead of the 2018-19 season. Last season's on-loan goalkeeper Jonas Lossl was bought permanently from Mainz and Borussia Dortmund defender Erik Durm arrived for £2.6 million according to reports in Germany.
Terence Kongolo, who joined Huddersfield on loan in January, was another player to make a permanent move to the John Smith's Stadium in 2018. The defender's £17.5m transfer from Monaco smashed the club's record fee.
A deadline day move was made Isaac Mbenza on a season-long loan deal from Ligue 1 side Montpellier, joining former team-mate Steven Mounie who was brought in 12 months ago. Netherlands Under-21 international Juninho Bacuna was poached from Eredivisie side Groningen for an estimated £2.6m.
Tom Ince was sold to Stoke City for £12m having rarely impressed in the Premier League for Town, while ex-England international Robert Green was released and joined Chelsea as a reserve goalkeeper.
Huddersfield's 2017-18 player of the year Christopher Schindler renewed his contract for three more years, keeping the German player at the John Smith stadium until 2021.
Transfer activity in
|GK||Ben Hamer||Leicester||Free||June 1|
|DF||Terence Kongolo||Monaco||£17.5m||June 8|
|MF||Ramadan Sobhi||Stoke||£5.7m||June 12|
|MF||Juninho Bacuna||Groningen||£2.6m||June 20|
|DF||Florent Hadergjonaj||Ingolstadt||£4.5m||July 1|
|GK||Jonas Lossl||Mainz||Undisclosed||July 1|
|DF||Erik Durm||Borussia Dortmund||£2.6m||July 13|
|FW||Adama Diakhaby||Monaco||£8m||July 21|
|MF||Isaac Mbenza||Montpellier||£13.5m||August 9|
Transfer activity out
|MF||Dean Whitehead||Unassigned||Retired||July 1|
|MF||Jack Payne||Bradford City||Undisclosed||July 16|
|MF||Sean Scannell||Bradford City||Undisclosed||July 18|
|DF||Tareiq Holmes-Dennis||Bristol Rovers||Undisclosed||July 23|
|FW||Tom Ince||Stoke||£12m||July 24|
|GK||Robert Green||Chelsea||Released||July 25|
|GK||Joel Coleman||Shrewsbury||Undisclosed||July 27|
|DF||Michael Hefele||Nottingham Forest||Undisclosed||August 9|
Huddersfield's 2018-19 Premier League fixtures
The Premier League kicked off its 2018-19 season on Friday August 10, with Huddersfield's first game taking place on August 11.
The Terriers took on London side Chelsea, losing 3-0 at home after goals from N'Golo Kante and Pedro and a penalty from Chelsea's new signing Jorginho.
A clash against last season's Premier League winners Manchester City takes place on August 19 before a game against newly-promoted Cardiff City on August 25.
Huddersfield's full Premier League fixtures can be seen below.
|11/08/2018||15:30||Huddersfield vs Chelsea|
|19/08/2018||13:30||Manchester City vs Huddersfield|
|25/08/2018||15:00||Huddersfield vs Cardiff|
|01/09/2018||15:00||Everton vs Huddersfield|
|15/09/2018||15:00||Huddersfield vs Crystal Palace|
|22/09/2018||15:00||Leicester vs Huddersfield|
|29/09/2018||15:00||Huddersfield vs Tottenham|
|06/10/2018||15:00||Burnley vs Huddersfield|
|20/10/2018||17:30||Huddersfield vs Liverpool|
|27/10/2018||15:00||Watford vs Huddersfield|
|05/11/2018||20:00||Huddersfield vs Fulham|
|10/11/2018||15:00||Huddersfield vs West Ham|
|25/11/2018||16:00||Wolves vs Huddersfield|
|01/12/2018||15:00||Huddersfield vs Brighton|
|04/12/2018||19:45||Bournemouth vs Huddersfield|
|08/12/2018||15:00||Arsenal vs Huddersfield|
|15/12/2018||15:00||Huddersfield vs Newcastle|
|22/12/2018||15:00||Huddersfield vs Southampton|
|26/12/2018||15:00||Manchester United vs Huddersfield|
|29/12/2018||15:00||Fulham vs Huddersfield|
|01/01/2019||15:00||Huddersfield vs Burnley|
|12/01/2019||15:00||Cardiff vs Huddersfield|
|19/01/2019||15:00||Huddersfield vs Manchester City|
|29/01/2019||19:45||Huddersfield vs Everton|
|02/02/2019||15:00||Chelsea vs Huddersfield|
|09/02/2019||15:00||Huddersfield vs Arsenal|
|23/02/2019||15:00||Newcastle vs Huddersfield|
|26/02/2019||19:45||Huddersfield vs Wolves|
|02/03/2019||15:00||Brighton vs Huddersfield|
|09/03/2019||15:00||Huddersfield vs Bournemouth|
|16/03/2019||15:00||West Ham vs Huddersfield|
|30/03/2019||15:00||Crystal Palace vs Huddersfield|
|06/04/2019||15:00||Huddersfield vs Leicester|
|13/04/2019||15:00||Tottenham vs Huddersfield|
|20/04/2019||15:00||Huddersfield vs Watford|
|27/04/2019||15:00||Liverpool vs Huddersfield|
|04/05/2019||15:00||Huddersfield vs Manchester United|
|12/05/2019||15:00||Southampton vs Huddersfield|