Fǎjiān 法堅 (also written 釋法堅 Shì Fǎjiān; flourished late fourth to early fifth century) was a monk active during the Western Qín 乞伏秦 (385–431 CE), the small dynastic state of the Qǐfú clan in the GānsùQīnghǎi region. He is recorded as the translator of KR6i0125 Ānán fēnbié jīng 阿難分別經 (T495) and a small number of other short sūtras. His monastic biography is otherwise poorly documented; the Liáng-period Chū sānzàng jì jí notes him only by name. He is one of several minor translators of the Sixteen Kingdoms 十六國 period whose work survived in the canonical corpus through the Sui-Tang catalog system.