Tung Shan, Mountain summit in Sai Kung District, Hong Kong.

Tung Shan is a mountain summit reaching 544 meters (1,785 feet) in Sai Kung District on Hong Kong's eastern side. The peak sits between Kowloon Peak and Shatin Pass Road, with multiple rocky outcrops providing different vantage points from the top.

Tung Shan's name means "East Mountain", from its position east of Tate's Cairn and Kowloon Peak in the Fei Ngo Shan range. The summit rises 544 m within Ma On Shan Country Park. The Wilson Trail's Fei Ngo Shan Road section passes north of the peak, where a junction of three one-way roads meets.

Tung Shan's Cantonese name means "East Mountain", though it stands between Tate's Cairn and Kowloon Peak. The Wilson Trail's Fei Ngo Shan Road section on the northern slope has a map board, a pavilion and picnic facilities. West along that road lies the Fei Ngo Shan pavilion, where MacLehose Trail Section 5 meets the Wilson Trail on the shared route to Shatin Pass Road.

The trailhead is accessible by minibus 1A from Diamond Hill MTR station, getting off at Fei Ngo Shan Road. The climb is relatively short, though the path can become slippery when wet.

Tung Shan lies within Ma On Shan Country Park, and three one-way roads meet just west of it: Fei Ngo Shan Road, Jat's Incline and Sha Tin Pass Road. From that junction, traffic can only descend via Jat's Incline toward Choi Wan Estate. The Wilson Trail also runs along Fei Ngo Shan Road on the mountain's northern side, where maps, a pavilion and picnic facilities are installed.