Now with Sharepoint and Excel Online, we've discovered that function names follow the base language of the Workspace that the sheet is stored in. It's essentially rendered Excel Online useless.
So I just so happen to have a PowerBook 540c here with a Swedish install of Office 4.2.1, and had to check my memory, since I remember it being localized.
VBA on this machine has English keywords (Sub/Dim/If/While), but Swedish application APIs (search in Word is Sök for instance). Screenshot of one of the sample macros: https://i.imgur.com/vDWQcWk.png