Walpurga
Walpurga or Walpurgis may refer to

Saint Walpurga (8th century), an English missionary in Germany
Walpurgis Night, a holiday celebrated in Central and Northern Europe
Royal Armouries Ms. I.33, a medieval manuscript on swordsmanship which is also called "Walpurgis MS"
La Noche de Walpurgis, a Spanish horror movie
256 Walpurga, Main Belt asteroid
Maria Antonia Walpurgis of Bavaria (1724–1780), princess of Bavaria
Walpurga von Isacescu (born 1870), Austrian swimmer

In music
Duchess Maria Antonia of Bavaria (1724–1780), musician
Die erste Walpurgisnacht (First Walpurgis Night), a cantata for choir and orchestra by Felix Mendelssohn
Repent Walpurgis by Procol Harum
Walpurgis Night, a 1984 album by German heavy metal band Stormwitch
"War Pigs", a song by Black Sabbath originally called "Walpurgis"
"Walpurgisnacht", a song by German pagan folk / medieval band Faun
Walpurgis (album), a 2021 album by Japanese singer Aimer