Nations (population 200,000+) with the most atheists according to the World Christian Database (2005).

Complete List

Ranking	Nation	Adherents	Percent
1	Korea, (North) Democratic Republic of	3,737,875	15.6
2	Sweden	1,098,950	11.8
3	Kazakhstan	1,434,020	9.1
4	Mongolia	215,737	8.0
5	China	96,860,601	7.3
6	Vietnam	5,888,435	6.6
7	Uruguay	220,277	6.5
8	Latvia	120,927	5.4
9	Cuba	567,691	5.1
10	Czech Republic	510,793	4.9
11	Estonia	62,410	4.7
12	Kyrgyzstan	253,122	4.6
13	Hungary	439,698	4.4
14	France	2,589,310	4.1
15	Armenia	120,100	3.9
16	Italy	2,162,156	3.6
17	Belarus	329,774	3.4
18	Slovakia	174,543	3.2
19	Ukraine	1,394,866	3.1
20	Japan	3,643,341	2.9
21	Macau	15,565	2.8
22	Serbia	216,463	2.8
23	Slovenia	51,981	2.6
24	Germany	2,056,011	2.5
25	Uzbekistan	675,496	2.4
26	Hong Kong	170,962	2.4
27	Chile	409,069	2.4
28	Belgium	225,966	2.1
29	Canada	684,100	2.0
30	Finland	104,967	2.0
31	Australia	398,957	1.9
32	Equatorial Guinea	12,610	1.8
33	Netherlands	290,759	1.8
33	Tajikistan	124,152	1.8
34	Austria	146,183	1.7
35	Luxembourg	7,304	1.5
36	Croatia	64,835	1.5
37	United Kingdom	891,525	1.4
38	Denmark	78,368	1.4
39	Portugal	149,606	1.4
40	Switzerland	101,416	1.3
41	Turkmenistan	67,891	1.3
42	New Zealand	56,141	1.3
43	Spain	500,943	1.1
44	New Caledonia	2,781	1.1
45	Russia	1,484,731	1.1
46	Macedonia	21,151	1.0
47	Bulgaria	74,985	1.0
48	Argentina	346,467	0.9
48	Montenegro	5,307	0.9
49	Lebanon	34,263	0.8
50	Bosnia and Herzegovina	29,170	0.8
51	Cyprus	6,447	0.7
51	Lithuania	23,851	0.7
52	Guadeloupe	2,891	0.6
52	Norway	29,948	0.6
53	Panama	20,035	0.6
54	French Polynesia	1,496	0.6
55	Guyana	4,077	0.5
56	Albania	16,578	0.5
57	Israel	36,264	0.5
58	Jordan	31,823	0.5
59	Dominican Republic	47,976	0.5
59	French Guiana	1,097	0.5
59	Moldova	16,840	0.5
60	Georgia	19,474	0.5
61	Martinique	1,785	0.4
62	Guatemala	62,157	0.4
63	United States (General)	1,328,803	0.4
64	Brazil	758,508	0.4
64	Puerto Rico	15,546	0.4
65	Iceland	1,240	0.4
66	Kosovo	6,902	0.3
67	Greece	34,187	0.3
68	Laos	18,662	0.3
69	South Africa	139,480	0.3
70	Ireland	12,418	0.3
71	Poland	100,220	0.3
72	Cambodia	37,373	0.3
72	Colombia	114,579	0.3
73	Costa Rica	11,126	0.2
74	Paraguay	14,547	0.2
75	Venezuela	62,524	0.2
76	Barbados	545	0.2
76	Honduras	15,837	0.2
77	Angola	37,552	0.2
77	Azerbaijan	18,083	0.2
78	Malta	797	0.2
78	Philippines	179,244	0.2
78	Taiwan	44,060	0.2
79	Peru	52,535	0.2
80	Cameroon	33,793	0.2
80	Sudan	74,646	0.2
81	India	1,937,586	0.2
81	Iraq	50,592	0.2
81	Zimbabwe	19,861	0.2
82	Bahamas, The	536	0.2
82	Ecuador	20,318	0.2
82	Romania	32,783	0.2
82	United Arab Emirates	7,250	0.2
83	Bolivia	14,339	0.1
83	Reunion	1,168	0.1
83	Singapore	6,606	0.1
84	Mauritius	1,572	0.1
84	Suriname	606	0.1
84	Syria	26,281	0.1
85	El Salvador	6,686	0.1
85	Indonesia	260,519	0.1
85	Malaysia	30,957	0.1
85	Mexico	118,424	0.1
86	Egypt	82,088	0.1
86	Israeli Occupied Territories (Palestine)	4,580	0.1
86	Korea, (South) Republic of	48,661	0.1
87	Guinea-Bissau	1,495	0.1
87	Turkey	66,423	0.1
87	Western Sahara	485	0.1
88	Mozambique	17,690	0.1
89	Madagascar	13,169	0.1
89	Sri Lanka	14,603	0.1
90	Nepal	17,265	0.1
90	Qatar	965	0.1
90	Tanzania	27,070	0.1
90	Vanuatu	144	0.1
91	Benin	4,907	0.1
91	Congo, Republic of the	1,901	0.1
91	Djibouti	440	0.1
91	Guinea	5,279	0.1
91	Haiti	4,992	0.1
91	Jamaica	1,411	0.1
91	Nicaragua	2,690	0.1
91	Solomon Islands	245	0.1
91	Thailand	34,558	0.1
92	Burma (Myanmar)	20,228	0.0
92	Trinidad and Tobago	572	0.0
92	Uganda	13,355	0.0
93	Bahrain	282	0.0
93	Brunei	138	0.0
93	Gabon	399	0.0
93	Nigeria	43,908	0.0
93	Papua New Guinea	1,841	0.0
93	Saudi Arabia	8,149	0.0
93	Togo	1,864	0.0
93	Zambia	3,977	0.0
94	Algeria	6,011	0.0
94	Belize	63	0.0
94	Chad	1,752	0.0
94	Congo, Democratic Republic of the	14,753	0.0
94	Fiji	190	0.0
94	Ghana	4,650	0.0
94	Kuwait	531	0.0
94	Lesotho	520	0.0
94	Namibia	494	0.0
94	Senegal	2,925	0.0
94	Somalia	1,570	0.0
94	Swaziland	286	0.0
94	Tunisia	2,545	0.0
94	Yemen	4,844	0.0
95	Bangladesh	12,738	0.0
95	Botswana	128	0.0
95	Central African Republic	600	0.0
95	Comoros	69	0.0
95	Cote d'Ivoire	2,258	0.0
95	Eritrea	340	0.0
95	Ethiopia	10,400	0.0
95	Iran	7,509	0.0
95	Liberia	521	0.0
95	Libya	844	0.0
95	Maldives	21	0.0
95	Mali	685	0.0
95	Mauritania	289	0.0
95	Oman	203	0.0
96	Afghanistan	658	0.0
96	Bhutan	0	0.0
96	Burkina Faso	606	0.0
96	Burundi	136	0.0
96	Cape Verde	0	0.0
96	Gambia, The	79	0.0
96	Kenya	1,675	0.0
96	Malawi	267	0.0
96	Morocco	376	0.0
96	Niger	170	0.0
96	Pakistan	8,683	0.0
96	Rwanda	28	0.0
96	Sierra Leone	178	0.0
96	Timor-Leste	0	0.0

Source

The data presented in QuickLists are from a variety of sources including the U.S. Census Bureau's International Data Base, the U.S. State Department's International Religious Freedom Report, the United Nations Human Development Reports, and others.

[Further information about this data source]