Marcus Yap Zhe Mian, (born 30 January 1994) is a Singaporean Powerlifting coach and powerlifter. He became the first Singaporean to break a powerlifting world record and win a medal at a world championship. In his career, he has broken two world records and six Asian records. He led the Singapore team to victory in several Asian Championships as well as coaching his younger brother, Matthew Yap, to breaking a total of four world records.
 With a background in Badminton and being nominated to represent Singapore in the Youth Olympic Games, Marcus picked up the sport of Powerlifting in and has competed in several international competitions like the Asia & Oceania Championships 2014 held in Melbourne, Australia, the 3rd IPF World Classic Championships held in Salo, Finland, the Asia & Oceania Championships 2016 held in Christchurch, New Zealand and the Asian Championships 2017 held in Kerala, India.
 Yap developed a passion for coaching shortly after, and started in his household. Under the influence of Marcus, both of his younger brothers, Matthew Yap and Matthias Yap, picked up the sport of Powerlifting and are currently Asian Champions and have broken several world records as well.
 Yap started Powerlifting in 2012 and made his international debut at the end of 2014 winning the Asia & Oceania Championship title. In 2015, he competed in the IPF World Championships and became the first Singaporean to break a world record in Powerlifting. This was the start of his medal haul which also sparked his passion for coaching.
 Yap has coached a team of athletes on the international platform, including his two younger brothers, Matthew and Matthias, who competed in the International Powerlifting Federation (IPF)'s Asian Championships in 2016, 2017 & 2018, and who have broken several Asian and World records. He also led the first Singaporean, Farhanna Farid, to achieve a gold medal in an international competition in the Women's Open category.
 Yap coached his younger brother, Matthew, who later made his debut on the international platform winning his first ever Asian title with 4 gold medals.
 Yap coached his younger brother, Matthew to breaking the squat World record and set it at 208 kg and to claim a Silver Total/Overall, becoming Ranked #2 in the Under 66 kg, Sub Junior category. This was Marcus' first appearance at a World Championship event to solely coach.
 Yap coached both his younger brothers, Matthew & Matthias and both were victorious. Matthew became the Asian Champion and also broke three world records in two categories (squat & total/overall), while Matthias got the silver medal. This was Matthias' debut on the international platform.
 Yap coached and led an entire team to victory in this competition. With the results of:
 Matthew Yap won the Asian Championship with a gold medal in the Total/Overall and set a new Asian squat record at 248 kg in the Men's Under 74 kg Junior category.
 Matthias Yap won the Asian Championship with a gold medal in the Total/Overall in the Men's Under 74 kg Sub Junior category.
 Farhanna Farid, the first Singaporean to get a gold medal total/overall in the Open category. She competed in the Women's Under 52 kg Open category.
 Venus Tang won the silver medal in the total/overall in the Women's Under 57 kg Open category.
 Yeong Qing Quan won the bronze medal in the total/overall in the Men's Under 93 kg Junior category.
 Yap won his first Asian title with a cumulative total of 497.5 kg in the Men's Under 59 kg Junior category and also claimed his first Asian record in the Squat at 185 kg.
 Yap won a silver medal and was ranked #2 in the world in his respective category. He also broke his first World record in the Deadlift at 223 kg, which was Singapore's first world record and ended off with a gold medal in the squat at 185 kg, a silver medal in the deadlift at 223 kg and a silver medal in the total/overall at 523 kg.
 Yap retained his title with the gold medal and a world record total/overall at 536 kg. He also broke the Asian record and obtained the gold medal in the squat at 196 kg, a gold in the bench press of 117.5 kg, a gold in the deadlift of 222.5 kg.
 In this competition, also obtained Singapore's first Open gold medal on an international platform.
 Yap defended his Asian champion title with a Total/Overall at 522.5 kg. He obtained a gold medal in the squat at 187.5 kg, a silver medal in the bench press at 110 kg and a gold medal in the Deadlift at 225 kg. He also won the Best Lifter award by Wilks in the Men's Open category.