It's was another backs-to-the-wall display from David Wagner 's men who were under the cosh for the majority of the game.
And despite Antonio Conte's men equalising fortuitously when a Mathias Zanka clearance ricocheted off the head of Marcos Alonso into the net, Town stood firm to seal their survival.
Although now of no consequence to the Terriers, it means Swansea City must now overturn a nine-goal difference on the final day of the season if they are to stay up.
Have a look below at the quick-fire talking points from today's Stamford Bridge encounter....
Laurent Depoitre's 50th minute goal against the run of play crucially helped alleviate the pressure and gave the side something to hold onto.
Moan of the Match
The Rajiv van La Parra 'No.10' experiment simply didn't work as the Dutchman struggled all night in the role before being replaced.
On a night like this, there can be only one question – where is the bunting for Sunday's John Smith's Stadium party?
Man of the Match
All the players, backroom staff and everyone connected to the club – this night and this season, they have been phenomenal to a man.
Tweet of the Match
Lee Mason (Greater Manchester): The whistler was particularly lenient in Town's favour, much to the annoyance of the home faithful.
The Huddersfield Town fans were incredible throughout while Chelsea only started singing after their lucky equaliser.
All season no-one has given them a chance but with a game to spare Huddersfield Town have defied all the odds.
Huddersfield Town (5-3-1-1): Lossl; Smith (Malone, 85’), Zanka, Schindler, Kongolo, Lowe (Hadergjonaj, 62’); Hogg, Billing, Mooy; van La Parra (Pritchard, 53’); Depoitre.
Subs Not Used: Coleman, Ince, Quaner, Mounie.
Booked : Lossl
Chelsea (4-3-3): Caballero; Azpilicueta, Christensen, Rudiger; Alonso, Fabregas, Kante, Zappacosta (Giroud, 54’); Willian, Morata, Pedro (Hazard, 58’).
Subs Not Used: Eduardo, Barkley, Bakayoko, Moses, Cahill.
Half time: Chelsea 0 Huddersfield Town 0
Next match: Arsenal FC at the John Smith’s Stadium, Premier League, Sunday, May 13 (kick off 3pm)