The 24-year-old German, son of seven-time F1 world champion Michael, will remain as Mercedes’ F1 reserve driver for a second year.
Mick Schumacher said: “I sorely missed racing this year. It’s what I’ve loved to do since I was a kid,” said Schumacher, who lost his seat on the F1 grid with Haas in 2022.
“A new chapter is beginning for me with Alpine.”
He scored points only twice in 43 grands prix over two seasons, will again provide back-up to seven-time world champion Lewis Hamilton and George Russell at Mercedes in 2024.
“It was sometimes difficult to watch the other drivers take to the track,” said Schumacher.
“I’ve grown up with single-seaters, so driving a car with a closed cockpit and covered wheels is a great opportunity to hone my driving skills.”