Match ends, Huddersfield Town 2, Blackburn Rovers 1.
Steve Mounie scored a brilliant long-range winner for Huddersfield Town to end Blackburn's eight-match unbeaten run.
Danny Graham put play-off chasing Blackburn ahead early on, heading a cross from Lewis Travis in off the post.
Karlan Grant tested goalkeeper Christian Walton in response, and then hit the crossbar with a chipped effort before having a penalty appeal waved away after seemingly being brought down by Darragh Lenihan.
Jon Stankovic eventually levelled with a powerful header from a fine Juninho Bacuna free-kick from the left.
Grant remained a threat and was again foiled by Walton before the break, but there was no denying Mounie midway through the second half as he found the top corner from distance.
Rovers' first defeat since 9 November saw them slip from ninth to 13th in the table, although they remain just three points off the play-off spots, while Huddersfield's second successive home win moved them up one place to 19th.
Blackburn boss Tony Mowbray made five changes for the trip to the John Smith's Stadium, with striker Graham given a start and Ryan Nyambe, Lewis Holtby and Derrick Williams all sidelined following the Boxing Day draw with Birmingham City.
Former England winger Stewart Downing started at left-back for the much-changed visitors, who were at least boosted by the return of on-loan Manchester City defender Tosin Adarabioyo.
Blackburn made a strong start, with Sam Gallagher calling Kamil Grabara into action inside five minutes before Graham nodded them ahead moments later.
Danny Cowley's Huddersfield, however, were vibrant in search of a equaliser, with leading scorer Grant their chief threat.
While Walton and the bar denied the striker, the Terriers were left most aggrieved by referee Andy Woolmer when he ignored shouts for a penalty after Lenihan appeared to bring Grant down in the box.
Stankovic nodded home the equaliser their first-half endeavour deserved, while Grant continued to search in vain for a goal of his own with Walton again foiling the striker before he had another threatening shot blocked before the interval and a header deflected wide in the second half.
Benin striker Mounie's 25-yard striker completed a fine fightback, but a reaction save from Grabara was needed to keep Adarabioyo from snatching a point for Rovers late on.
Huddersfield Town manager Danny Cowley said:
"We showed real resilience and character to fight back from a really bad start.
"We were poor in the first 10 minutes and they deserved to score, but credit to the players for picking up. We were worthy winners in the end.
"I'm proud of the players, because that was a very important win. It wasn't perfect, it was far from perfect, but they climbed the mountain that they made for themselves.
"Everybody understands the cause now - and we're all fighting for the same cause. Previously there was a lot of disharmony maybe, but we've all got a common goal."
Blackburn Rovers head coach Tony Mowbray told BBC Radio Lancashire:
"I think for 20 minutes, we controlled the game. We scored a goal, could have scored another.
"But I think they changed their formation, went more direct, played two strikers, made it a scrappier game. They're a big, strong, physical team , we knew that before we came here. They've got some powerful players.
"We're really disappointed with the first goal, because a team with Graham, Johnson, Graham, Lenihan, Adarabioyo, we shouldn't be losing a goal like that. A frustrating day for us, really."
- 28BrownSubstituted forHadergjonajat 73'minutesBooked at 76mins
- 9KachungaSubstituted forCampbellat 70'minutesBooked at 79mins
- 24MounieSubstituted forEdmonds-Greenat 90'minutes
- 31BennettBooked at 90mins
- 4JohnsonSubstituted forChapmanat 74'minutes
- 8RothwellSubstituted forBellat 45'minutes
- 10GrahamSubstituted forArmstrongat 61'minutes
- Andy Woolmer
- Shots on Target
Second Half ends, Huddersfield Town 2, Blackburn Rovers 1.
Elliott Bennett (Blackburn Rovers) is shown the yellow card.
Foul by Elliott Bennett (Blackburn Rovers).
Florent Hadergjonaj (Huddersfield Town) wins a free kick in the defensive half.
Offside, Huddersfield Town. Danny Simpson tries a through ball, but Karlan Grant is caught offside.
Foul by Amari'i Bell (Blackburn Rovers).
Fraizer Campbell (Huddersfield Town) wins a free kick on the right wing.
Attempt missed. John Buckley (Blackburn Rovers) left footed shot from outside the box misses to the left. Assisted by Stewart Downing.
Attempt blocked. Sam Gallagher (Blackburn Rovers) left footed shot from the right side of the box is blocked. Assisted by Elliott Bennett.
Substitution, Huddersfield Town. Rarmani Edmonds-Green replaces Steve Mounie.
Attempt missed. Trevoh Chalobah (Huddersfield Town) right footed shot from outside the box misses to the right. Assisted by Karlan Grant.
Attempt blocked. Karlan Grant (Huddersfield Town) left footed shot from the left side of the box is blocked. Assisted by Trevoh Chalobah.
Attempt missed. Fraizer Campbell (Huddersfield Town) left footed shot from the centre of the box is close, but misses to the right following a corner.
Corner, Huddersfield Town. Conceded by Christian Walton.
Attempt saved. Karlan Grant (Huddersfield Town) right footed shot from a difficult angle on the left is saved in the bottom left corner. Assisted by Lewis O'Brien.
Attempt missed. Sam Gallagher (Blackburn Rovers) right footed shot from the left side of the box misses to the left. Assisted by Tosin Adarabioyo following a corner.
Attempt missed. Tosin Adarabioyo (Blackburn Rovers) right footed shot from the centre of the box misses to the left. Assisted by Lewis Travis following a corner.
Attempt saved. Tosin Adarabioyo (Blackburn Rovers) header from the centre of the box is saved in the bottom right corner. Assisted by Stewart Downing with a cross.
Corner, Blackburn Rovers. Conceded by Danny Simpson.