Singh held a comfortable lead with a three-day total of 22-under-par 194 over Australian Anthony Choat and Filipino Antonio Lascuna, who both charged up the leaderboard with sensational 63s at the US$75,000 Asian Development Tour (ADT) event.
Jay Bayron of the Philippines, a winner on the ADT, veteran Zaw Moe of Myanmar, Michael Moore of Australia and Sri Lankan Anura Rohana were a further two shots back on 206 in tied fourth place at the remarkable Taman Dayu Golf Club and Resort.
Rory Hie remains as the best placed Indonesian following his round of 71 as he sits in eighth place, 13 shots from the leader Singh.
Singh, who is playing on a sponsor's invitation, fired his highest score of the week but still remained on track of securing his first career victory outside of India.
"I got nothing to complain. Just another standard round if you can call a 67 that. I hit the ball probably better, the best I've hit it in the last three days surprisingly. I just misread the course a little bit," said Singh, who mixed six birdies against one bogey.
Singh believes such a big lead might work against him if he gets ahead of himself in the final round.
"Really strange things have happened and 18 holes is a long time. It is a little bit difficult because you can get ahead of yourself. The good thing I've been doing this week is playing each shot at a time and focussing on the task at hand. Hopefully I can do it for one more day," said the Singh, who is also an accomplished drummer.
Australian Choat, currently in 21st position on the ADT Order of Merit, has a lot to play for as he aims to boost his rankings on the money list. The highlight of his day came on the 17th hole when he holed a massive 45-feet putt for eagle.
"I have a lot to play for and hopefully I can finish the second half of the year strongly and finish in the top three of the Order of Merit. It is everything. Coming from Australia, it is not easy to make a living on the smaller Tours but once you make it on the main Tour and start establishing yourself as a player, you can really make a living," said Choat.
Having played on the Professional Golf Tour of India (PGTI) for the past four years with Singh, Choat concedes that it will take a herculean effort to knock him off his perch.
"I played a bit of golf with Sujjan (Singh) in India. He is the type of player I don't expect to fall down. He has won before and he keeps going. I'll just go out there and take one shot at a time. Hopefully the putter is hot again," added the Australian.
Bayron posted a 65 with eight birdies against one bogey but admits that he will only be playing for second place.
"It is disappointing but we are all playing for second. He (Singh) has been playing fantastically and I don't think he will lose this lead. I have my own goal of finishing as high as I can on the Order of Merit and I'll need a good result this week to accomplish that," said Bayron.
Leading third round scores
194 - Sujjan SINGH (IND) 64-63-67
204 - Anthony CHOAT (AUS) 67-74-63, Antonio LASCUNA (PHI) 72-69-63
206 - Jay BAYRON (PHI) 70-71-65, Zaw MOE (MYN) 69-69-68, Michael MOORE (AUS) 69-68-69, Anura Rohana (SRI) 72-65-69
207 - Rory HIE (INA) 66-70-71
208 - Pijit PETCHKASEM (THA) 70-70-68
210 - Mars PUCAY (PHI) 72-70-68, Tim STEWART (AUS) 69-69-72
211 - Will YANAGISAWA (USA) 71-71-69, CHANG Tse-Peng (TPE) 71-70-70, KIM Gi-whan (KOR) 71-70-70, Rattanon WANNASRICHAN (THA) 72-69-70
212 - Indra HERMAWAN (INA) 73-69-70, CHIANG Chen-Chih (TPE) 75-69-68, Sukree OTHMAN (MAS) 72-69-71, S. Siva Chandhran (MAS) 69-72-71, Michael BIBAT (PHI) 69-70-73