Foreign names are not permitted to be used for Portuguese infants, so Aiden, Ashley, Bruce, Charlotte, Dylan, and Jenny are all prohibited. A law also forbids giving a kid a nickname as their legal name. For example, the name Tom cannot be used, but Tomas is permitted.

Any name with C, Q, or W in it would be disallowed in Iceland because these letters do not exist in the Icelandic alphabet.

Denmark has a list of around 7,000 baby names that are allowed, and, like in Germany, gender-neutral names are off the list.