Nathan Lowe fired the Chairboys into a first-half lead, sparking worry inside the Accu Stadium.
However, the Terriers got back on level terms when Ryan Ledson rifled home an unstoppable effort past Will Norris.
Huddersfield pressed relentlessly for a second, eventually registering one in the 75th minute. Alfie May’s shot was only deflected as far as Marcus Harness at the back post and the playmaker slotted home from point blank range.
The game approached an end in chaotic fashion, as three goals were registered beyond the 90th minute. Connor Taylor levelled for Wycombe before Harness struck back to notch his second of the afternoon.
Huddersfield were heading for victory but could not prevent Lowe heading home his second 11 minutes into stoppage time.
Here are The Yorkshire Post’s ratings from the Accu Stadium.
9. Bali Mumba - 4
Simply had to be stronger to prevent Wycombe's opener. Naive defending. | National World Photo: Tony Johnson
10. Marcus Harness - 8
Buzzed around, knitted moves together well and bagged a brace. | Jonathan Gawthorpe Photo: Jonathan Gawthorpe
11. Alfie May - 6
Lacked composure in front of goal at times but continued to work tirelessly. | Tony Johnson Photo: Tony Johnson
12. Bojan Radulovic - 6
A quiet showing as the physical presence in Huddersfield's frontline. | Tony Johnson Photo: Tony Johnson