Mamma Mia! - watch online: streaming, buy or rent
Currently you are able to watch "Mamma Mia!" streaming on HBO Max. It is also possible to buy "Mamma Mia!" on Apple TV as download or rent it on Apple TV online.
There aren't any free streaming options for Mamma Mia! right now. If you want know when it is streaming for free, click 'Free' in the filters above and hit the notification bell.