Dimitrios Stergios Lalas or Lallas (Greek: Δημήτριος Στέργιος Λάλας ή Λάλλας) was a significant Greek composer and musician.

Lalas was born in 1844 or 1848 in Magarevo, then Ottoman Empire (now North Macedonia).

[1][2] He studied in Monastir, Thessaloniki, Athens and later in 1868-70 in the University of Music and Performing Arts Munich.

[1] In 1870 he appears to have met the great German composer Richard Wagner and by 1876 he was his student and collaborator.

[1] At some point, before 1906, Lalas composed a musical work on the Macedonian Struggle, entitled "Makedonikos Paian" (Μακεδονικός Παιάν).