Leong Jun Hao (; born 13 July 1999) is a Malaysian badminton player. An Asian junior champion and world junior championship silver medalist, he won the boys' singles title at the 2017 Asian Junior Championships. This achievement was followed by a silver medal at World Junior Championships.
Leong was born and raised in Kuala Lumpur to Celine Low and Anthony Leong. He started playing badminton for fun outside his house. At the age of 9, he started playing the sport seriously under his father's tutelage. Leong joined the Bukit Jalil Sports School (BJSS) at the age of 13. At the end of 2018, he injured his hip twice which resulted in his world ranking dropping from 40th to 120th.
In July, Leong won the Asian Junior Championships by defeating Bai Yupeng in the final. In October, he reached the final of World Junior Championships where he lost to top seed, Kunlavut Vitidsarn, 21âÂÂ17, 15âÂÂ21, 9âÂÂ21. In November, he reached his maiden senior final at the Malaysia International Challenge before losing to compatriot Iskandar Zulkarnain Zainuddin.
In January, he reached the final of the Thailand Masters as a qualifier where he lost to the second seed, Tommy Sugiarto. In April, he won his first senior title at the Finnish Open by defeating his compatriot Cheam June Wei in the final.
In December 2019, Leong reached his first final of the year at the Bangladesh International but lost out to top seed Lakshya Sen.
He was part of Malaysia's men's team that won silver at the 2020 Asian Team Championships in February 2020.
Leong was one of the players that won gold at the 2022 Asian Team Championships for Malaysia in February. In October, he clinched his first BWF World Tour title at the Indonesia Masters, beating compatriot Cheam June Wei in three games.
In May, Leong made his debut at the 2023 SEA Games where he helped Malaysia win a silver medal in the men's team event. He later competed in the men's singles event and went on to win bronze, losing out to Indonesia's Christian Adinata in the semi-finals. In July, he was crowned as men's singles national champion after winning the 2023 Malaysian National Badminton Championships. In October, he competed at the KL Masters as the second seed. He emerged as the winner after defeating top seed Lee Chia-hao 22âÂÂ20, 21âÂÂ13 in the final.
In November, Leong reached the final of the Japan Masters, his first of a Super 500 level tournament. He finished as the runner-up, losing 10âÂÂ21, 13âÂÂ21 to Li Shifeng.
In 2025, Leong participated in the SEA Games in Thailand. He won a silver medal in the team event and a bronze in the men's singles, repeating his achievements from 2 years earlier in Cambodia.
Men's singles
Boys' singles
Boys' singles
The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tours are divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.
Men's singles
Men's singles