Roger de Flor is an opera (drama lírico) in three acts by Ruperto Chapí for libretto by Mariano Capdepón.

Before Roger de Flor, only seven works by Spanish composers were staged at the Teatro Real, two of which were 1-act operas by Chapí.

The first complete performance took place some days later, on 22 February, the anniversary of the First Spanish Republic,[3] conducted by the composer, and the opera was staged for 4 nights.

When modern musicians turned to Roger de Flor having the goal of a new performance, they found out that about a half of the first act was lost.

The influence of the latter is also perceptible in the third act duo of María and Roger, in which Italian delicacy is mixed with some vocal writing reminding the Lohengrin.