Free for commercial use
Serif fonts free for commercial use, page 4
Every font here is one we host under an open license, such as the SIL Open Font License or Apache 2.0. Those allow commercial work, logos included. Each font's page names its license, so check it before you ship.
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Rasa
RasaAnna Giedrys (Yrsa+Rasa design), David Brezina (Yrsa art-direction, Rasa art-direction, design), 2 stylesFree for commercial use
Yrsa
YrsaAnna Giedrys (Yrsa+Rasa design), David Brezina (Yrsa art-direction, Rasa art-direction, design), 21 stylesFree for commercial use
Noto Serif Tamil
Noto Serif TamilIndian Type Foundry, Tom Grace, and the Monotype Design Team, 2 stylesFree for commercial use
Castoro
CastoroJohn Hudson with Paul Hanslow and Kaja Słojewska., 2 stylesFree for commercial use
Noto Serif HK
Noto Serif HKRyoko NISHIZUKA 西塚涼子 (kana & ideographs); Frank Grießhammer (Latin, Greek & Cyrillic); Wenlong ZHANG 张文龙 (bopomofo); Sandoll Communications 산돌커뮤니케이션, Soohyun PARK 박수현, Yejin WE 위예진 & Donghoon HAN 한동훈 (hangul elements, letters & syllables), 1 styleFree for commercial use