15 Best National Parks in Thailand Ranked
Thailand has over 150 national parks and marine sanctuaries. These are the 15 worth prioritising — ranked by wildlife, scenery, and the quality of the visitor experience.
Quick Answer
What is the best national park in Thailand?
Khao Yai is Thailand's best overall national park — UNESCO-listed, reliable elephant and hornbill sightings, stunning waterfalls, and only 150km from Bangkok. For diving, Similan is the standout. For waterfalls, Erawan. For wilderness, Khao Sok.
Khao Yai National Park
Central Thailand
Why it ranks: UNESCO-listed; Thailand's most visited park with reliable elephant and hornbill sightings
Best for: Wildlife watching, waterfalls, accessible from Bangkok
Tip: Hire a guide for the morning wildlife drive — self-driving the main loop is legal but you will miss most animals.
Doi Inthanon National Park
North Thailand
Why it ranks: Thailand's highest peak (2,565m), cloud forest, twin Royal Chedis, and excellent birding
Best for: Trekking, photography, birding; stunning in December–February
Tip: The summit is cold — bring a jacket even in hot season. The Karen village trail and Wachirathan waterfall are essential.
Erawan National Park
West Thailand
Why it ranks: Seven-tiered emerald-green waterfall in a limestone valley — one of Thailand's most beautiful
Best for: Swimming, hiking, day tripping from Kanchanaburi
Tip: Start at tier one early and hike up. Upper tiers are far less crowded and equally beautiful.
Khao Sok National Park
South Thailand
Why it ranks: Ancient rainforest older than the Amazon, Cheow Lan Lake, floating raft houses, and cave tours
Best for: Overnight lake stays, kayaking, jungle treks; a genuine adventure destination
Tip: Book floating raft house accommodation well ahead for peak season. The lake at dawn is extraordinary.
Mu Ko Ang Thong National Marine Park
Gulf of Thailand
Why it ranks: 42-island archipelago with a saltwater lagoon, dramatic limestone peaks, and pristine snorkelling
Best for: Day trips from Koh Samui or Koh Phangan; kayaking through the emerald lagoon
Tip: The park is accessible only by boat tour — book through operators in Koh Samui or Koh Phangan.
Mu Ko Similan National Park
Andaman Sea
Why it ranks: World-class diving and snorkelling on some of Asia's finest coral reefs; remote and pristine
Best for: Diving, liveaboard trips; best November to April when seas are calm
Tip: The park is only open from late October to mid-May. Liveaboard trips from Khao Lak are the best way to experience the outer islands.
Doi Suthep-Pui National Park
North Thailand
Why it ranks: Chiang Mai's mountain backdrop with Wat Doi Suthep temple, hill tribe villages, and birding trails
Best for: Easy hiking from Chiang Mai; temple visit combined with forest walks
Tip: The temple is spectacular at sunrise before tour groups arrive. The Monk's Trail on foot from the city is the best approach.
Kaeng Krachan National Park
Central Thailand
Why it ranks: UNESCO-listed; Thailand's largest national park with excellent tiger and elephant habitat
Best for: Birding, wildlife, camping; accessible from Hua Hin
Tip: The Ban Krang campsite area at dawn offers extraordinary wildlife encounters — stay overnight rather than day tripping.
Phu Kradueng National Park
Northeast Thailand
Why it ranks: A high plateau (1,316m) of temperate forest, meadows, and cliff viewpoints reachable by a steep hike
Best for: Trekking, camping, cool-season escape from heat; open October to May only
Tip: Porters are available to carry gear up the 5.5km climb. Sunset from the western cliff is worth every step.
Nam Nao National Park
Northeast Thailand
Why it ranks: Mixed forest covering the Phetchabun Range; good wildlife, few tourists, and honest wilderness
Best for: Off-the-beaten-track trekking, birding, wildlife watching without crowds
Tip: Combine with a visit to the nearby Pha Nok Khao viewpoint for sweeping highland scenery.
Ao Phang Nga National Park
Andaman Sea
Why it ranks: The iconic limestone karst bay from The Man with the Golden Gun; mangrove kayaking and sea caves
Best for: Kayaking, boat tours, photography; accessible from Phuket or Krabi
Tip: Avoid the James Bond Island tour boats mid-morning — it is genuinely crowded. Kayak tours that visit the sea caves separately are far better.
Doi Phu Kha National Park
North Thailand
Why it ranks: Remote highland park near Nan province with spectacular floral blooms (wild Himalayan cherry) in February
Best for: Cherry blossom season, trekking, cultural encounters with Hmong and Mien villages
Tip: The pink sakura-like blooms peak in late January to mid-February — time a visit to Nan province around them.
Khao Luang National Park
South Thailand
Why it ranks: Nakhon Si Thammarat's highest peak with cloud forest, waterfalls, and one of Thailand's best orchid collections
Best for: Serious trekking, orchid spotting, waterfall walks; rarely visited by foreign tourists
Tip: A guide is strongly recommended for summit hikes — the trail is unmarked in places and cloud cover comes in fast.
Kui Buri National Park
Central Thailand
Why it ranks: The best national park in Thailand for reliable elephant sightings at close range in grassland habitat
Best for: Elephant watching — the park's grasslands draw large herds predictably at dusk
Tip: The official park safari trucks provide close encounters safely. Book through the park; private operators are not permitted.
Khao Laem National Park
West Thailand
Why it ranks: Reservoir lake surrounded by flooded forest, dramatic rock formations, and the beautiful Sai Yok area
Best for: Boat trips on the reservoir, cave visits, waterfall treks; quieter than Erawan
Tip: The Bang Phra viewpoint and the forest walk to Huai Mae Kamin waterfall are the highlights. Combine with Erawan for a two-day Kanchanaburi trip.
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