Sóllilja Bjarnadóttir (born 13 February 1995) is an Icelandic basketball player who plays for Breiðablik in the Icelandic top-tier Úrvalsdeild kvenna. Outside of Breiðablik, she has played with Stjarnan, Valur and KR in Iceland. She played professionally for A3 Basket Umeå in the Basketligan dam during the 2021–2022 season.
