The contract is reportedly worth more than one million euros and the 24-year-old Norwegian striker may stay tied to the deal for even longer than a decade.
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Hegerberg's previous sponsorship deal with Puma has now expired.
Hegerberg said: "It is yet another massive step in my career. Nike and I have common goals to elevate women's sports in the years to come."
She continued: "My performances brought me here, and I sure want to keep writing history with the help of Nike, on and off the field. I am thrilled to be part of this team."
The player's agent, Victor Bernard, said: "This is an historic contract and a true commitment both to Ada and women's football."
Hegerberg has won the French domestic league title with Lyon for the past five years in a row, and the Champions League in the last four seasons consecutively. Individually she has won the Ballon d'Or in 2018, the women's game's first

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