Teodulfo Decena Belarmino (1922-1984) was a Filipino actor originally from the rustic town of Calamba, Laguna.
The first stage of Belarmino's career was dedicated to his home studio LVN Pictures. Belarmino is one of the leading men in the stable of fine seasoned actors under the stewardship of LVN Studios. Some of his leading ladies are: Rebecca Gonzales in Mutya ng Pasig, Tessie Quintana in Kapitan Erlinda ng Candaba, Celia Flor in Ang Tapis Mo Inday, and Lilia Dizon in Venus.
In September 1967, Belarmino was among the four perpetrators in the fatal shooting of Arturo Fernandez, son of politician Estanislao Fernandez. Though Belarmino and the three attempted to bring him to the hospital, Fernandez was declared dead upon arrival, with Belarmino surrendering to the police the day after and arguing self-defense.
Late in his career, Belarmino appeared in notable supporting roles in the following films: Boy Zapanta (Pentagon Films), Ang Kabayaran (Academy Films), Bakit May Putik ang Bulaklak? (GS Pictures), Ang Halaga Ay Luha, Laman at Dugo (Emerald Films), and Sa Maamo...Mabangis Na Kamay (P. Maglinao Enterprises). Belarmino also had a brief stint in the television series Annaliza starring Julie Vega.