Release Dates
| USA | 17 January 1937 | (New York City, New York) |
| USA | 30 January 1937 | |
| Mexico | 17 June 1937 | |
| Sweden | 23 August 1937 | |
| France | 22 September 1937 | |
| Croatia | 5 February 1938 | |
| Denmark | 7 February 1938 | |
| Slovenia | 23 April 1938 | |
| West Germany | 29 August 1964 | (TV premiere) |
Also Known As (AKA)
| Argentina | La legión negra |
| Austria (TV title) | Geheimbund 'Schwarze Legion' |
| Belgium (French title) | La légion noire |
| Brazil | Legião Negra |
| Denmark | Hemmelig terror |
| Spain | La legión negra |
| Finland (TV title) | Musta legioona |
| France | La légion noire |
| Greece (transliterated ISO-LATIN-1 title) | I mavri legeon |
| Croatia | Pod crnom krinkom |
| Hungary | Fekete légió |
| Italy | Legione nera |
| Mexico | La legión negra |
| Poland | Czarny legion |
| Portugal | A Legião Negra |
| Sweden | Den svarta ligan |
| Slovenia | Pod črno krinko |
| Soviet Union (Russian title) | Чёрный легион |
| West Germany | Geheimbund 'Schwarze Legion' |
| Yugoslavia (Croatian title) | Pod crnom krinkom |
| Yugoslavia (Serbian title) (literal title) | Pod crnom maskom |
| Yugoslavia (Slovenian title) | Pod črno krinko |
