Bertha of Holland (c. 1055 – 1093), also known as Berthe or Bertha of Frisia and erroneously as Matilda or Bertrada, is queen consort of the Franks from 1072 until 1092, as the first wife of King Philip I. Bertha's marriage to the king in 1072 is a result of peace negotiations between him and her stepfather, Count Robert the Frisian of Flanders.

After nine years of childlessness, the royal couple have three children, including Philip's successor, Louis the Fat.

Philip, however, grows tired of his wife by 1090, and repudiates her in 1092 in order to marry the already married Bertrada of Montfort.

That marriage is a scandal since both Philip and Bertrada are already married to other people, at least until Queen Bertha dies the next year.