Adam Boyd struck after 66 seconds to sink Huddersfield and stretch Orient's unbeaten league run to four games.
Boyd raced on to Sean Thornton's pass and fired past keeper Matt Glennon.
Huddersfield pressed, with Stephen Purches clearing off the line from Gary Roberts and Joe Skarz heading over. Michael Collins also fired just wide.
The Terriers had penalty claims turned down after Alton Thelwell's challenge on Roberts, while substitute Daniel Broadbent blazed over in injury time.
Huddersfield: Glennon, Butler, Berrett (Broadbent 77), Clarke, Holdsworth, Skarz, Collins, Craney (Worthington 65), Goodwin, Jevons (Cadamarteri 51), Roberts. Subs Not Used: Smithies, Williams.
Booked: Worthington.
Please turn on JavaScript. Media requires JavaScript to play.
Booked: Chambers.
Goals: Boyd 2.
Att: 10,414
Ref: Chris Sarginson (Staffordshire).
What are these?
Print Sponsor
Bookmark with:
What are these?