How to use: Government cultural institutes (Goethe, Cervantes, Alliance Française, British Council, Confucius) operate worldwide. Private chains offer immersive study abroad. Online platforms provide flexible learning.

#	School / Institute	HQ	Network	Languages	Notes	Source
1	EF International Language Campuses	Switzerland HQ	Multi-country	English, Spanish, French, German, Italian, etc.	Founded 1965	EF
2	Kaplan International English	UK HQ	40+ schools	English	Founded 1938	Kaplan
3	Berlitz Corporation	USA HQ	550+ centers	70+ languages	Founded 1878	Berlitz
4	EC English Language Centres	Malta HQ	20+ centers	English	Founded 1991	EC English
5	Embassy English	UK	9 schools	English	Part of EC	Embassy English
6	Stafford House International	UK/USA	12 schools	English	Founded 1952	Stafford House
7	LSI Language Schools	UK	30+ schools	English	Founded 1965	LSI
8	Eurocentres	Switzerland	30+ schools	11 languages	Founded 1948	Eurocentres
9	BSC Bristol	UK	—	English	Bristol UK	BSC
10	International House World	Spain	160+ schools	English	Founded 1953	IH World
11	Centre of English Studies	Ireland	5 schools	English	Founded 1971	CES
12	Atlas Language School	Ireland	Dublin	English	Founded 2003	Atlas
13	Sprachcaffe Languages Plus	Germany	30+ schools	7 languages	Founded 1983	Sprachcaffe
14	Goethe-Institut	Germany	158 institutes	German	Founded 1951	Goethe-Institut
15	Cervantes Institute	Spain	86 centers	Spanish	Founded 1991	Instituto Cervantes
16	Alliance Française	France	830+ branches	French	Founded 1883	Alliance Française
17	British Council	UK	100+ countries	English	Founded 1934	British Council
18	Confucius Institute	China	550+ institutes	Chinese (Mandarin)	Founded 2004	Hanban
19	Japan Foundation	Japan	24 offices	Japanese	Founded 1972	Japan Foundation
20	Sejong Hakdang	S Korea	244 centers	Korean	Founded 2007	Sejong Hakdang
21	Wall Street English	Switzerland HQ	Global	English	Founded 1972	Wall Street English
22	Open English (Online)	USA	Online	English (Latin America focus)	Founded 2007	Open English
23	Lingoda	Germany	Online	English/Spanish/French/German	Founded 2013	Lingoda
24	italki	China	Online	150+ languages	Founded 2007	italki
25	Preply	Ukraine	Online	50+ languages	Founded 2012	Preply
26	Babbel	Germany	Online	14 languages	Founded 2007	Babbel
27	Rosetta Stone	USA	Online + immersion	25 languages	Founded 1992	Rosetta Stone
28	Duolingo	USA	Online	40+ languages	Founded 2011	Duolingo
29	Memrise	UK	Online	22 languages	Founded 2010	Memrise
30	Busuu	UK	Online	12 languages	Founded 2008	Busuu
31	Sprachschule Aktiv	Germany	Munich/Berlin	German + others	Berlin/Munich	Sprachschule Aktiv
32	DID Deutsch Institut	Germany	5 schools	German	Frankfurt etc	DID
33	Carl Duisberg Centren	Germany	5 schools	German	Cologne etc	Carl Duisberg
34	Inlingua	Switzerland HQ	300+ schools	30+ languages	Founded 1968	Inlingua
35	Accent Français	France	Montpellier	French	Founded 1998	Accent Français
36	Eurocentres Paris	France	Paris	French	—	Eurocentres
37	ILA — Institut Linguistique Adenet	France	Montpellier	French	—	ILA
38	Alpha B	France	Nice	French	—	Alpha B
39	Don Quijote	Spain	13 schools	Spanish	Founded 1986	Don Quijote
40	Enforex	Spain	17 schools	Spanish	—	Enforex
41	Salamanca Spanish School	Spain	Salamanca	Spanish	—	Tia Tula
42	Hispania Escuela de Español	Spain	Valencia	Spanish	—	Hispania
43	Estudio Sampere	Spain	5 schools	Spanish	Founded 1956	Sampere
44	Scuola Leonardo da Vinci	Italy	5 schools	Italian	—	Leonardo da Vinci
45	Centro Lingua Italiana	Italy	Florence	Italian	—	CLI
46	Linguaviva	Italy	Florence/Lignano	Italian	Founded 1976	Linguaviva
47	Instituto Brasileiro de Línguas	Brazil	Multi-city	Portuguese	—	IBL
48	Russian Language Institute Pushkin	Russia	Moscow	Russian	—	Pushkin Inst
49	Beijing Language and Culture University	China	Beijing	Chinese	Founded 1962	BLCU
50	Yonsei Korean Language Institute	S Korea	Seoul	Korean	Founded 1959	Yonsei KLI

Sources: Each school official corporate or program website.