Diljá is an Icelandic female given name. It is Icelandic form of Delia. Notable people with the name include:

Diljá (born 2002), Icelandic singer Diljá Mist Einarsdóttir (born 1987), Icelandic politician and lawyer Diljá Ögn Lárusdóttir (born 2003), Icelandic basketball player Diljá Ýr Zomers (born 2001), Icelandic footballer

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