This is a list of the operas written by the German-speaking Bohemian composer Florian Leopold Gassmann (1729–1774).
| Title | Genre | Subdivisions | Libretto | Première date | Place, theatre | |
|---|---|---|---|---|---|---|
| Merope | opera seria | 3 acts | Apostolo Zeno | Carnival 1757 | Venice, Teatro San Moisè | |
| Issipile | opera seria | 3 acts | Metastasio | Carnival 1758 | Venice, San Moisè | |
| Gli uccellatori | dramma giocoso | 3 acts | Carlo Goldoni | Carnival 1759 | Venice, San Moisè | |
| Filosofia in amore | dramma giocoso | 3 acts | Carlo Goldoni | Carnival 1760 | Venice, San Moisè | |
| Catone in Utica | opera seria | 3 acts | Metastasio | 29 April 1761 | Venice, Teatro San Samuele | |
| Ezio | opera seria | 3 acts | Metastasio | 1761 | Florence, Teatro della Pergola | |
| Un pazzo ne fa cento | dramma giocoso | 3 acts | Autumn 1762 | Venice, San Moisè | ||
| L'olimpiade | opera seria | 3 acts | Metastasio | 18 October 1764 | Vienna, Theater am Kärntnertor | |
| Il trionfo d'amore | azione teatrale | 1 act | Metastasio | 25 January 1765 | Vienna, Schönbrunn Palace | |
| Achille in Sciro | opera seria | 3 acts | Metastasio | Spring 1766 | Venice, Teatro San Giovanni Grisostomo | |
| Il viaggiatore ridicolo | dramma giocoso | 3 acts | Carlo Goldoni | 25 May 1766 | Vienna, Theater am Kärntnertor | |
| L'amore artigiano | dramma giocoso | 3 acts | Carlo Goldoni | 26 April 1767 | Vienna, Burgtheater | |
| Amore e Psiche | opera seria | 3 acts | Marco Coltellini | 5 October 1767 | Vienna, Burgtheater | |
| La notte critica | opera buffa | 3 acts | Carlo Goldoni | 5 January 1768 | Vienna, Burgtheater | |
| L'opera seria | commedia per musica | 3 acts | Ranieri de' Calzabigi and Metastasio | 1769 | Vienna, Burgtheater | |
| La contessina | dramma giocoso | 3 acts | Marco Coltellini after Carlo Goldoni | 3 September 1770 | Mährisch-Neustadt | |
| Il filosofo innamorato | dramma giocoso | 3 acts | Marco Coltellini | 1771 | Vienna, Burgtheater | |
| Le pescatrici | dramma giocoso | 3 acts | Carlo Goldoni | 1771 | Vienna, Burgtheater | |
| Don Quischott von Mancia (Acts 1 and 2 by Giovanni Paisiello) | commedia | 3 acts | Giovanni Battista Lorenzi | 1771 | Vienna, Burgtheater | |
| I rovinati | commedia | 3 acts | Giovanni Antonio Gastone Boccherini | 23 June 1772 | Vienna, Burgtheater | |
| La casa di campagna | dramma giocoso | 3 acts | Giovanni Antonio Gastone Boccherini | 3 or 13 February 1773 | Vienna, Burgtheater |