Anuna De Wever Der Heyden (2001 – ) is a Belgian climate activist. They are a climate and social justice activist, best known as a leading figure in the School Strike for Climate movement in Belgium. De Wever co-founded Youth for Climate Belgium alongside Kyra Gantois and their activism began when Belgium did not sign a new declaration on addressing climate change at the COP24 summit.
De Wever was one of the youngest climate activists to sail on the Regina Maris to Santiago, Chile, to attend the 2019 United Nations Climate Change Conference in order to keep climate emissions low. Afterwards, they completed an internship with the Greens-European Free Alliance in the European Parliament and then became the trade and investment policy officer for Climate Action Network Europe.