Borisas Dauguvietis (26 March 1885 – 13 July 1949) was a Lithuanian actor, playwright, writer, poet, and theater director.

[4] After briefly studying engineering in Riga, Dauguvietis enrolled in the Imperial Theatrical School in St. Petersburg, which he graduated from in 1909.

Dauguvietis's students included the actors Elena Bindokaitė, Emilija Grikevičiūtė, Galina Jackevičiūtė, Kazys Jarašūnas, Aleksandras Kernagis, Bronė Kurmytė, Vanda Lietuvaitytė, Balys Lukošius, Antanas Mackevičius, Juozas Monkevičius, Stasys Petraitis, Emilija Platušaitė, Alfonsas Radzevičius, Juozas Rudzinskas, and Liucija Rutkauskaitė.

[1] Dauguvietis reportedly liked classical music, could play the cello and the piano, and knew many of Alexander Pushkin's, Mikhail Lermontov's, and Sergei Yesenin's poems.

Additionally, he was a deputy of the Supreme Council of the USSR and chairman of the Playwrights Section of the Theater Society and the Writers' Union.

[2] Sculptor Rapolas Jakimavičius created a bust of Dauguvietis which stands in the foyer of the Lithuanian National Drama Theater.

The surname of Dauguvietis is engraved in the "Tree of Unity" sculpture in Vilnius, which contains one hundred of the most prominent Lithuanian personalities of all time.