Thyrsus' relics were brought to Constantinople. His cult became popular in the Iberian Peninsula since the Middle Ages, initially known as Santo Tirso, remaining as that only in Portugal, as it changed to San Tirso in Spain.
Some of his relics were brought to France: Thyrsus is thus the titular saint of the cathedral of Sisteron in the Basses Alpes, the Cathédrale Notre Dame et Saint Thyrse. Thyrsus is thus the patron saint of Sisteron.