Bruce Cormie's double helped Huntly end Culter's dream of becoming the first-ever junior club into the fourth round of the Scottish Cup.
Chris Mountford fired high into the net on the turn to put the Aberdeenshire side ahead after 18 minutes.
But Cormie lashed home after connecting with a long ball four minutes later.
Cormie capitalised on hesitation from sweeper Murray Rathay to slam the ball home then rounded the keeper to set up Ross McWilliam to tap in the third.
Culter: Perry, Simm, Rathay (Andy Campbell 65), Wilson, Craib, Pressley (Farmer 65), Brown, Mountford, Shand (Peter Stewart 27), Craik, Rinto.
Subs Not Used: McCall, Richies.
Booked: Rinto, Peter Stewart.
Goals: Mountford 18.
Huntly: Bremner, Murray (Corser 87), Bissett, Redpath, Morrison, Gairns, McWilliam, Guild, Cormie, Gauld (Robertson 17), McGowan (Maitland 66).
Subs Not Used: Dorrat, Stewart Gray.
Booked: Murray.
Goals: Cormie 22, 38, McWilliam 60.
Att: 975
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