Alas pagunungan utawa alas montana (montane forest) iku formasi alas tropika teles sing dumadi ing wewengkon pagunungan. Salah siji ciriné, alas iki kerep dislimuti méga, lumrahé ing èlevasi dhuwur tajuk (kanopi)né. Wit-witan lan lemah ing alas iki kerep katutup déning lumut, sing thukul ngrembaka. Amarga saka iku, formasi alas iki uga dijenengaké alas lumut, alas kabut, utawa alas méga (cloud forest).

Tabel perbandingan karakter patang formasi alas tropika teles.

Agihan 

Alas-alas pagunungan ana di nagara-nagara

Cathetan sikil

Pranala njaba 

 Monteverde Costa Rica Cloud Forest
 Tropical Montane Cloud Forest Initiative 
 National Geographic (2001), "Cloud Forests Fading in the Mist, Their Treasures Little Known"
 An Ecological Reserve in the Cloud Forest of Mindo Ecuador
 St. Elena and Rara Avis, Costa Rica - Video 
 Tropical hydrology and cloud forests project 
 Hydrology of tropical cloud forests project 
 Cloud Forest Video - Rara Avis CR

Alas
Gunung