Molder, a student at Georgia Tech and the No. 1-ranked golfer in the GolfWeek/Sagarin College Rankings, beat 23-year-old David Sanchez 1-up in the quarterfinals and then handed Brandt Snedeker a 1-up defeat in the afternoon semifinals.
He will now face recent grad of Rhode Island Michael Sims for the title.
Sims, of Southampton, Bermuda, ousted Franklin Hatchett 1-up in the morning and then canned a 6-foot birdie putt on the 20th hole to beat Michael Webb in the afternoon.
The championship match is scheduled for 36 holes over the 7,076-yard par-72 Pinehurst layout.
Results from the third round quarter and semifinals of match play at the 101st North and South Amateur Championship, played at the Pinehurst (N.C.) No. 2 course:
*Third Round Semifinals
Bryce Molder def. Brandt Snedeker, 1-up
Michael Sims def. Michael Webb, 20 holes
*Third Round Quarterfinals
Bryce Molder def. David Sanchez, 1-up
Brandt Snedeker def. Matt Weibring, 5-and-3
Michael Sims def. Franklin Hatchett, 1-up
Michael Webb def. Chad Wilfong, 23 holes.
Results and story from Wednesday's second round
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