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◄ 66^th IMO 2025 ►

Participating countries

This is the list of countries which have confirmed that they will participate at this IMO. The final list of participating countries will be published along with the official results of the IMO.

#	Code	Country	Number of participants
			C	L	DL	OA	OB	OC
Number of participants			641	113	113	55	47	42
1	LBY	Libya				1
2	BFA	Burkina Faso		1	1
3	LIE	Liechtenstein	1	1	1
4	CMR	Cameroon	1	1	1
5	GHA	Ghana	2	1	1
6	NIC	Nicaragua	3	1	1
7	CHI	Chile	3	1	1
8	SLV	El Salvador	3	1	1
9	LUX	Luxembourg	3	1	1
10	BOL	Bolivia	4		1
11	PRI	Puerto Rico	3	1	1		1
12	NAM	Namibia	4	1	1
13	PAR	Paraguay	4	1	1
14	URY	Uruguay	5	1	1
15	CUB	Cuba	6	1
16	MDA	Republic of Moldova	6	1	1
17	LKA	Sri Lanka	6	1	1
18	FRA	France	6	1	1
19	LVA	Latvia	6	1	1
20	RWA	Rwanda	6	1	1
21	SRB	Serbia	6	1	1
22	MAC	Macau	6	1	1
23	MKD	North Macedonia	6	1	1
24	HND	Honduras	6	1	1
25	UAE	United Arab Emirates	6	1	1
26	MNE	Montenegro	6	1	1
27	SWE	Sweden	6	1	1
28	CZE	Czech Republic	6	1	1
29	SAF	South Africa	6	1	1
30	BIH	Bosnia and Herzegovina	6	1	1
31	CRI	Costa Rica	6	1	1
32	SUI	Switzerland	6	1	1
33	PAK	Pakistan	6	1	1
34	COL	Colombia	6	1	1
35	POL	Poland	6	1	1
36	ISL	Iceland	6	1	1
37	NZL	New Zealand	6	1	1
38	DOM	Dominican Republic	6	1	1
39	ARM	Armenia	6	1	1
40	DEN	Denmark	6	1	1
41	FIN	Finland	6	1	1
42	SVN	Slovenia	6	1	1
43	ESP	Spain	6	1	1
44	CYP	Cyprus	6	1	1
45	IRQ	Iraq	6	1	1
46	PER	Peru	6	1	1
47	BGR	Bulgaria	6	1	1
48	BLR	Belarus	6	1	1
49	NOR	Norway	6	1	1
50	POR	Portugal	6	1	1
51	SYR	Syria	6	1	1
52	MRT	Mauritania	6	1	1
53	AUT	Austria	6	1	1
54	ECU	Ecuador	6	1	1
55	LTU	Lithuania	6	1	1
56	HRV	Croatia	6	1	1
57	KAZ	Kazakhstan	6	1	1
58	KGZ	Kyrgyzstan	6	1	1
59	ALG	Algeria	5	1	1	1	1
60	UGA	Uganda	6	1	1			1
61	BWA	Botswana	6	1	1			1
62	ALB	Albania	6	1	1			1
63	BGD	Bangladesh	6	1	1			1
64	UZB	Uzbekistan	6	1	1		1
65	PHI	Philippines	6	1	1		1
66	TJK	Tajikistan	6	1	1		1
67	CAN	Canada	6	1	1		1
68	IDN	Indonesia	6	1	1		1
69	TUN	Tunisia	6	1	1		1
70	USA	United States of America	6	1	1	1
71	ITA	Italy	6	1	1	1
72	AZE	Azerbaijan	6	1	1	1
73	ARG	Argentina	6	1	1	1
74	SVK	Slovakia	6	1	1	1
75	BEL	Belgium	6	1	1	1
76	IRL	Ireland	6	1	1	1
77	GER	Germany	6	1	1	1
78	MMR	Myanmar	6	1	1	1
79	MAS	Malaysia	6	1	1	1
80	EST	Estonia	6	1	1	1
81	MEX	Mexico	6	1	1	1
82	KEN	Kenya	6	1	1			2
83	QAT	Qatar	6	1	1			2
84	KSV	Kosovo	6	1	1			2
85	NLD	Netherlands	6	1	1		1	1
86	HKG	Hong Kong	6	1	1		1	1
87	GEO	Georgia	6	1	1		1	1
88	IND	India	6	1	1	1	1
89	TKM	Turkmenistan	6	1	1	1	1
90	BTN	Bhutan	6	1	1	1	1
91	CIV	Ivory Coast	6	1	1	1	1
92	TUR	Türkiye	6	1	1	2
93	RUS	Russian Federation	6	1	1	2
94	HEL	Greece	6	1	1			3
95	NPL	Nepal	6	1	1		1	2
96	UNK	United Kingdom	6	1	1	1		2
97	PSE	Palestine	6	1	1	1	1	1
98	KHM	Cambodia	6	1	1	1	1	1
99	IRN	Islamic Republic of Iran	6	1	1	1	1	1
100	MAR	Morocco	6	1	1	1	1	1
101	ISR	Israel	6	1	1	1	1	1
102	HUN	Hungary	6	1	1	2		1
103	ROU	Romania	6	1	1	2	1
104	THA	Thailand	6	1	1	1	3
105	SGP	Singapore	6	1	1	1	3
106	AUS	Australia	6	1	1	2	1	1
107	TWN	Taiwan	6	1	1	2	2
108	KOR	Republic of Korea	6	1	1	2	2
109	JPN	Japan	6	1	1	3	1
110	MNG	Mongolia	6	1	1	2		3
111	UKR	Ukraine	6	1	1	3	1	1
112	BRA	Brazil	6	1	1	3	2
113	SAU	Saudi Arabia	6	1	1	2	2	2
114	VNM	Vietnam	6	1	1	1	7
115	CHN	People's Republic of China	6	1	1	1	1	9

General enquiries can be made to Ava Yeo, IMO Board Office: Ava Yeo   •   Webmaster: webmaster@imo-official.org   •   Copyright © 2006 International Mathematical Olympiad. All rights reserved.