Sanskrit
It is very common to see Sanskrit words written using Tibetan letters, and this can be confusing for learners. And often it is one of the first things that Dharma students want to learn about.
Here is a very brief overview of how Tibetan is used to present Sanskrit names and mantras. You can see some good examples in Units 4 and 5 of this document from Rangjung Yeshe Institute as well: https://online.ryif.org/wp-content/uploads/2025/08/9.teachingewts.pdf This document at Scribd is also quite useful: https://www.scribd.com/document/53051517/Sanskrit-Equivalents-in-Tibetan-extended-THDL#google_vignette
Retroflex Letters
Sanskrit retroflex sounds (ṭ, ṭh, ḍ, ṇa) are written using horizontally flipped or reversed versions of standard Tibetan letters ཊ་ ཋ་ ཌ་ ཎ།
The Letter Ba / Wa
The Tibetan letter བ (ba) represents both the root syllable b/p/w/- and the Sanskrit v. A small subscript mark called wa-sur (ྭ) is often added to explicitly show a wa/va sound.
Aspirates and Roots
Compound consonant stacks in Sanskrit (like str or rya) are stacked vertically, but the head letter rule changes compared to native Tibetan words. ཙྪཱ་
Vowels
Long vowels in Sanskrit are marked with special vowel signs, sometimes placing a specific vowel sign below or above the stacked letters differently than native words. Usually seen as a small a (a-chung) below a letter. ཨཱ་
Pronunciation Approaches
Traditional Tibetan Reading: Practicioners in Tibet read Sanskrit mantras and loanwords using a naturalized Tibetan phonetic habit (e.g., vajra བཛྲ་ becomes benza, padma པདྨ་ becomes pema, and svaha སྭཱ་ཧཱ་ becomes soha).
Strict Sanskrit Reconstruction
Scholars look past the Tibetan letter adjustments to reconstruct the original classical Indian Sanskrit pronunciation, often with quite accurate results.