Olivia Lykke Nygaard (born 14 September 2001) is a Norwegian handball player for Larvik HK and the Norwegian national team.
She was part of the Norwegian squad for the 2019 Women's U-19 European Handball Championship, where she received a bronze medal.
Nygaard was a Danish citizen until 2018, but after becoming a Norwegian citizen she quickly became a part of Norway's junior team because of her talent as a goalkeeper.
On 5 March 2023, Nygaard made her debut on the Norwegian national team, and on 7 November 2023, she was selected to represent Norway at the 2023 World Women's Handball Championship.