- Arabic :
Ferb : Hatem Yasser / حاتم ياسر (speaking & ?)
- Brazilian :
Ferb : Gustavo Pereira (speaking & singing)
- Bulgarian :
Ferb : ?
- Cantonese : [wikipedia]
Ferb : ?
- Castilian :
Ferb : Sergio García Marín (speaking + singing (ep. 65) & Lucky Luciano (singing) + Miguel Ángel Varela (rapping + singing (substitution)) & Miguel Antelo (singing (substitution))
- Croatian :
Ferb : Darije Somi (speaking) & Denin Serdarević (singing)
- Czech :
Ferb : Vojtěch Rohlíček (speaking & ?)
- Danish : [wikipedia]
Ferb : Carl Gustav Weyde Andersen (speaking & ?)
- Dutch : [wikipedia]
Ferb : Quinten Schout (speaking (beginning seas. 1) + Sander van der Poel / Jeremy Johnson (speaking (rest of seas. 1 + seas. 2-4)) & ?)
- English :
Ferb : Thomas Brodie-Sangster (speaking) & Danny Jacob (singing)
- Finnish : [wikipedia]
Ferb : Oskari Tamminen / Paulus Kähkönen (speaking & ?)
- French :
Ferb : Fabrice Trojani (speaking & ?)
- German :
Ferb : Stefan Günther (speaking) & Thomas Amper (singing (seas. 1 (ep. 2b) + seas. 2 (ep. 15b)) + Manuel Straube (additional singing in seas. 1 (ep. 2b))
- Greek :
Ferb : ?
- Hebrew :
Ferb : Ofir Zemach / אופיר צמח + Guy Rushiniak / גיא רושיניאק (speaking & ?)
- Hindi :
Ferb : ?
- Hungarian : [wikipedia]
Ferb : Timon Barnabás (speaking & ?)
- Icelandic :
Ferb : ?
- Indonesian :
Ferb : ?
- Italian :
Ferb : Fabio Valenzi (speaking (1st voice)) + Federico Campaiola (speaking (2nd voice)) & ?)
- Japanese : [wikipedia]
Ferb : Masuda Yūki / 増田裕生 (speaking) & Tachibana Toshihiro / 立花敏弘 (singing)
- Korean :
Ferb : ?
- Latin Spanish :
Ferb : Marco Portillo (speaking (seas. 1-2 + seas. 3 ep. 66 - 85)) + Diego Ángeles (speaking (seas. 2 ep. 59 - 61 + seas. 3-4)) & Roberto Velázquez / Horacio Alonso (singing) + Polo Rojas (singing (seas. 4 ep. 207))
- Malay :
Ferb : ?
- Mandarin : [wikipedia]
Ferb : "Nàdòu" Lín Yù-Zhì / "納豆" 林郁智 (speaking & ?) (seas. 1)) + Xià Zhì-Shí / 夏治世 (speaking & ? (seas. 2-4))
- Norwegian : [wikipedia]
Ferb : Erlend Sem Hartgen (speaking & ?)
- Polish :
Ferb : Mateusz Narloch (speaking & ?)
- Portuguese : [wikipedia]
Ferb : Peter Michael (speaking & ? (seas. 1 - middle of seas. 2)) + Carlos Freixo (middle of seas. 2 - middle of seas. 3)
- Putonghua :
Ferb : ?
- Romanian : [wikipedia]
Ferb : Alexandru Vodă (speaking & ? (seas. 1-3)) + Lucian Ionescu (speaking & ? (seas. 4))
- Russian : [wikipedia]
Ferb : Mikhail Borisov / Михаил Борисов (seas. 1) + Aleksandr Gorchilin / Александр Горчилин (beginning seas. 2) + Dmitriy Cherevatenko / Дмитрий Череватенко (middle seas. 2-4)
- Serbian :
Ferb : Marko Mrđenović / Марко Мрђеновић (speaking) & Danny Jacob (singing - original version)
- Slovak :
Ferb : ?
- Swedish :
Ferb : John Åström (speaking & singing)
- Tagalog :
Ferb : ?
- Tamil :
Ferb : ?
- Telugu :
Ferb : ?
- Thai :
Ferb : ?
- Turkish :
Ferb : ?
- Ukrainian : [wikipedia]
Ferb : Taras Nesterenko / Тарас Нестеренко (speaking (seas. 1/3)) & Volodymyr Trach / Володимир (?) (singing (seas. 1/3)) + Pavlo Skorokhodko / Павло Скороходько (speaking & singing (seas. 2/4))