Here is a detailed list of 152 countries in the world, along with their official language(s) and approximate population:
1. Afghanistan - Population: 38 million, Language: Dari, Pashto
2. Albania - Population: 2.8 million, Language: Albanian
3. Algeria - Population: 41 million, Language: Arabic
4. Andorra - Population: 77,000, Language: Catalan
5. Angola - Population: 32 million, Language: Portuguese
6. Antigua and Barbuda - Population: 103,000, Language: English
7. Argentina - Population: 45 million, Language: Spanish
8. Armenia - Population: 3 million, Language: Armenian
9. Australia - Population: 26 million, Language: English
10. Austria - Population: 9 million, Language: German
11. Azerbaijan - Population: 10 million, Language: Azerbaijani
12. Bahamas - Population: 397,000, Language: English
13. Bahrain - Population: 1.7 million, Language: Arabic
14. Bangladesh - Population: 168 million, Language: Bengali
15. Barbados - Population: 290,000, Language: English
16. Belarus - Population: 9.5 million, Language: Belarusian, Russian
17. Belgium - Population: 11.5 million, Language: Dutch, French, German
18. Belize - Population: 398,000, Language: English
19. Benin - Population: 11 million, Language: French
20. Bhutan - Population: 770,000, Language: Dzongkha
21. Bolivia - Population: 11 million, Language: Spanish
22. Bosnia and Herzegovina - Population: 3.5 million, Language: Bosnian, Croatian, Serbian
23. Botswana - Population: 2.3 million, Language: English, Setswana
24. Brazil - Population: 211 million, Language: Portuguese
25. Brunei - Population: 434,000, Language: Malay, English
26. Bulgaria - Population: 7 million, Language: Bulgarian
27. Burkina Faso - Population: 20 million, Language: French
28. Burundi - Population: 11 million, Language: Kirundi, French
29. Cabo Verde - Population: 556,000, Language: Portuguese
30. Cambodia - Population: 15 million, Language: Khmer
31. Cameroon - Population: 25 million, Language: French, English
32. Canada - Population: 37 million, Language: English, French
33. Central African Republic - Population: 4.7 million, Language: French, Sango
34. Chad - Population: 15 million, Language: French, Arabic
35. Chile - Population: 18 million, Language: Spanish
36. China - Population: 1.4 billion, Language: Mandarin Chinese
37. Colombia - Population: 47 million, Language: Spanish
38. Comoros - Population: 850,000, Language: Arabic, Comorian, French
39. Congo (Brazzaville) - Population: 5 million, Language: French
40. Congo (Kinshasa) - Population: 84 million, Language: French
41. Costa Rica - Population: 5 million, Language: Spanish
42. Cote d'Ivoire - Population: 26 million, Language: French
43. Croatia - Population: 4 million, Language: Croatian
44. Cuba - Population: 11 million, Language: Spanish
45. Cyprus - Population: 1.2 million, Language: Greek, Turkish
46. Czechia - Population: 10.7 million, Language: Czech
47. Denmark - Population: 5.8 million, Language: Danish
48. Djibouti - Population: 1 million, Language: French, Arabic
49. Dominica - Population: 72,000, Language: English
50. Dominican Republic - Population: 11 million, Language: Spanish
51. Ecuador - Population: 17 million, Language: Spanish
52. Egypt - Population: 101 million, Language: Arabic
53. El Salvador - Population: 6 million, Language: Spanish
54. Equatorial Guinea - Population: 1 million, Language: Spanish, French, Portuguese
55. Eritrea - Population: 3 million, Language: Tigrinya, Arabic, English
56. Estonia - Population: 1.3 million, Language: Estonian
57. Eswatini - Population: 1.3 million, Language: Swazi, English
58. Ethiopia - Population: 114 million, Language: Amharic, Oromo, Tigrigna
59. Fiji - Population: 900,000, Language: English, Fijian, Hindi
60. Finland - Population: 5.5 million, Language: Finnish, Swedish
61. France - Population: 67 million, Language: French
62. Gabon - Population: 2 million, Language: French
63. Gambia - Population: 2.3 million, Language: English
64. Georgia - Population: 4 million, Language: Georgian
65. Germany - Population: 83 million, Language: German
66. Ghana - Population: 31 million, Language: English
67. Greece - Population: 10.4 million, Language: Greek
68. Grenada - Population: 112,000, Language: English
69. Guatemala - Population: 18 million, Language: Spanish
70. Guinea - Population: 13 million, Language: French
71. Guinea-Bissau - Population: 1.8 million, Language: Portuguese
72. Guyana - Population: 790,000, Language: English
73. Haiti - Population: 11 million, Language: Haitian Creole, French
74. Honduras - Population: 9 million, Language: Spanish
75. Hungary - Population: 9.7 million, Language: Hungarian
76. Iceland - Population: 360,000, Language: Icelandic
77. India - Population: 1.3 billion, Language: Hindi, English
78. Indonesia - Population: 273 million, Language: Indonesian
79. Iran - Population: 83 million, Language: Persian
80. Iraq - Population: 39 million, Language: Arabic, Kurdish
81. Ireland - Population: 4.9 million, Language: Irish, English
82. Israel - Population: 9 million, Language: Hebrew, Arabic
83. Italy - Population: 60 million, Language: Italian
84. Jamaica - Population: 2.9 million, Language: English
85. Japan - Population: 126 million, Language: Japanese
86. Jordan - Population: 10 million, Language: Arabic
87. Kazakhstan - Population: 19 million, Language: Kazakh, Russian
88. Kenya - Population: 52 million, Language: Swahili, English
89. Kiribati - Population: 116,000, Language: English, Gilbertese
90. Korea, North - Population: 25 million, Language: Korean
91. Korea, South - Population: 51 million, Language: Korean
92. Kuwait - Population: 4.4 million, Language: Arabic
93. Kyrgyzstan - Population: 6.5 million, Language: Kyrgyz, Russian
94. Laos - Population: 7 million, Language: Lao
95. Latvia - Population: 2 million, Language: Latvian
96. Lebanon - Population: 6 million, Language: Arabic
97. Lesotho - Population: 2 million, Language: Sesotho, English
98. Liberia - Population: 4.8 million, Language: English
99. Libya - Population: 6.9 million, Language: Arabic
100. Liechtenstein - Population: 38,000, Language: German
101. Lithuania - Population: 2.8 million, Language: Lithuanian
102. Luxembourg - Population: 630,000, Language: French, German, Luxembourgish
103. Madagascar - Population: 27 million, Language: Malagasy, French
104. Malawi - Population: 18 million, Language: English, Chichewa
105. Malaysia - Population: 32 million, Language: Malay
106. Maldives - Population: 440,000, Language: Dhivehi
107. Mali - Population: 19 million, Language: French
108. Malta - Population: 460,000, Language: Maltese, English
109. Marshall Islands - Population: 59,000, Language: Marshallese, English
110. Mauritania - Population: 4 million, Language: Arabic
111. Mauritius - Population: 1.3 million, Language: English, French
112. Mexico - Population: 128 million, Language: Spanish
113. Micronesia - Population: 105,000, Language: English
114. Moldova - Population: 2.6 million, Language: Moldovan, Romanian
115. Monaco - Population: 38,000, Language: French
116. Mongolia - Population: 3 million, Language: Mongolian
117. Montenegro - Population: 620,000, Language: Montenegrin
118. Morocco - Population: 36 million, Language: Arabic
119. Mozambique - Population: 29 million, Language: Portuguese
120. Myanmar - Population: 54 million, Language: Burmese
121. Namibia - Population: 2.6 million, Language: English
122. Nauru - Population: 11,000, Language: English, Nauruan
123. Nepal - Population: 29 million, Language: Nepali
124. Netherlands - Population: 17 million, Language: Dutch
125. New Zealand - Population: 5 million, Language: English, Maori
126. Nicaragua - Population: 6 million, Language: Spanish
127. Niger - Population: 24 million, Language: French
128. Nigeria - Population: 200 million, Language: English
129. North Macedonia - Population: 2 million, Language: Macedonian
130. Norway - Population: 5.4 million, Language: Norwegian
131. Oman - Population: 4.8 million, Language: Arabic
132. Pakistan - Population: 218 million, Language: Urdu, English
133. Palau - Population: 18,000, Language: English, Palauan
134. Panama - Population: 4 million, Language: Spanish
135. Papua New Guinea - Population: 9 million, Language: English, Tok Pisin
136. Paraguay - Population: 7 million, Language: Spanish, Guarani
137. Peru - Population: 32 million, Language: Spanish, Quechua
138. Philippines - Population: 109 million, Language: Filipino, English
139. Poland - Population: 38 million, Language: Polish
140. Portugal - Population: 10 million, Language: Portuguese
141. Qatar - Population: 2.8 million, Language: Arabic
142. Romania - Population: 19 million, Language: Romanian
143. Russia - Population: 145 million, Language: Russian
144. Rwanda - Population: 13 million, Language: Kinyarwanda, French, English
145. Saint Kitts and Nevis - Population: 52,000, Language: English
146. Saint Lucia - Population: 184,000, Language: English
147. Saint Vincent and the Grenadines - Population: 110,000, Language: English
148. Samoa - Population: 200,000, Language: English, Samoan
149. San Marino - Population: 33,000, Language: Italian
150. Sao Tome and Principe - Population: 215,000, Language: Portuguese
151. Saudi Arabia - Population: 35 million, Language: Arabic
152. Senegal - Population: 16 million, Language: French
Please note that population figures are approximate and may vary slightly. Additionally, some countries might have multiple official languages or regional languages.