Noto Sans KR
Google Fonts · 2012

Google's authoritative Korean sans-serif, delivering a wide weight range and harmonised script coverage for professional multilingual typography.
About
Noto Sans KR mirrors the scope and ambition of Noto Sans JP but centres on the Korean Hangul script, with full Latin and Cyrillic companions. Its nine weights make it one of the most flexible Korean typefaces available for free, covering everything from delicate light text to heavy display headings. It is a dependable workhorse for web applications, mobile interfaces, and editorial work requiring Korean language support.
Classification
A comprehensive Korean-primary sans-serif with nine weights, balancing Hangul, Latin, and Cyrillic scripts within a unified neutral design system. Stroke terminals and proportions are carefully calibrated for legibility across digital and print contexts.