A magrodome is a sliding glass roof found aboard passenger ships. Typically positioned over a swimming pool, it can be opened and closed automatically depending on the weather .
The first magrodome was fitted on the , launched in 1963 over its Lido deck pool.
Magrodomes have since been included in a number of modern cruise ships. Some traditional liners, such as Cunard's former flagship Queen Elizabeth 2, had a magrodome retrofitted; one was placed over its existing quarterdeck pool in 1985 during a 1985 refurbishment in Bremerhaven. It was removed in a subsequent refit.