List of 20th-century classical composers by birth date

This is a list of composers of 20th-century classical music, sortable by name, year of birth, year of death, nationality, notable works, and remarks. The list is by no means complete. Only composers of significant fame and importance are included. The style of the composer's music is given where possible, bearing in mind that some defy simple classification. Names are listed first by year of birth, then in alphabetical order within each year.