Castle Peak may refer to:

• Castle Peak (Alaska), Wrangell Mountains
• Castle Peak (California), Sierra Nevada range
• Castle Peak (Colorado), Elk Mountains
• Castle Peak (Sawatch Range), Sawatch Range, Colorado
• Castle Peak (Idaho), White Cloud Mountains, Idaho
• Castle Peak (Texas)
• Castle Peak (Washington), North Cascades
• Castle Peak (Cowlitz County, Washington)
• Castle Peak (Hong Kong) (Chinese: 青山, sometimes transliterated Tsing Shan), a mountain in the western New Territories of Hong Kong
  • Castle Peak Bay (青山灣), a bay outside Tuen Mun, near Castle Peak, Hong Kong
  • Castle Peak Beach (青山灣泳灘), a gazetted beach in Tuen Mun, Hong Kong
  • Castle Peak Hospital (青山醫院), a psychiatric hospital in Hong Kong, to the east of Castle Peak at Tuen Mun
  • Castle Peak Road (青山道 and 青山公路), a road in Hong Kong running north from Kowloon
  • Tsing Shan Monastery (青山禪院), a monastery at the foot of Castle Peak, Hong Kong
• Castle Peak (Antarctica)

• Castle Peak, in El Escorpión Park, San Fernando Valley, California
• AMD Castle Peak, CPUs of the Zen 2 Threadripper line by Advanced Micro Devices