- Post established: 1710, King Shô Eki
- Other Names: 三弦主取 sangen nushidori
- Japanese: 三線打 (sanshin uchi)
The sanshin-uchi or sangen nushidori was a Ryukyuan official post which oversaw the construction of high quality sanshin (a three-stringed musical instrument related to the Japanese shamisen). The post was created by King Shô Eki in 1710 and came under the umbrella of the kaizuri bugyô-sho, which oversaw lacquerwares and other craft products. The first person to hold the post was named Chinen.
- Thompson, Robin. "The Sanshin and its Place in Okinawan Music." Okinawa bijutsu zenshû 沖縄美術全集. vol. 5. p. i.
- Liao Zhenpei 廖真珮, "Ryûkyû kyûtei ni okeru Chûgoku kei ongaku no ensô to denshô" 琉球宮廷における中国系音楽の演奏と伝承, in Uzagaku no fukugen ni mukete 御座楽の復元に向けて, Naha, Okinawa: Uzagaku fukugen ensô kenkyûkai 御座楽復元演奏研究会 (2007), 88, citing Kyûyô, vol. 9, item 658.