Following is a partial list of different nations/countries mentioned in the Bible.

1. Achaia, Acts 18:12, 27; 19:21; Romans 15:26; 1 Corinthians 16:15; 2 Corinthians 1:1; 9:2; 11:10; 1 Thessalonians 1:7,8
2. Aram (modern Syria), 2 Kings 5:1; 12:17; Isaiah 7:1, 4; Ezekiel 27:16; Hosea 12:12; Amos 1:5
3. Asia, Acts 2:9; 6:9; 19:10; Romans 16:5; 1 Corinthians 16:19; 2 Timothy 1:15; Revelation 1:4
4. Assyria, Isaiah 10:24; 31:8, 52:4, Micah 5:5, 6
5. Arabia, 2 Chronicles 9:14; Isaiah 21:13; Jeremiah 25:24; Ezekiel 27:21; Galatians 1:17; 4:25
6. Babylon, 2 Kings 17:24; 1 Chronicles 9:1; Isaiah 13:1;Jeremiah 20:4; Daniel 1:1; Revelation 14:8
7. Canaan, Genesis 10:18; 12:6; Exodus 3:8; Numbers 33:40; Joshua 3:10; Matthew 15:22
8. Cappadocia, Acts 2:9; 1 Peter 1:1
9. Cilicia, Acts 6:9; 15:23, 41; 21:39; 22:3; 23:34; 27:5; Galatians 1:21
10. Crete, Acts 27:7, 12, 13, 21; Titus 1:5
11. Cush, Genesis 2:13; 10:6-8; 2 Kings 19:9; 1 Chronicles 1:8-10; Psalm 7:1; Isaiah 11:11; 20:3-5
12. Cyrene, Matthew 27:32; Mark 15:21; Acts 2:10; 11:20; 13:1
13. Elam, Genesis 14:1, 9; Ezra 2:7; 4:9; Nehemiah 7:12; Jeremiah 25:25; Ezekiel 32:24; Acts 2:9
14. Egypt, Genesis 16:1, 21:9; Exodus 1:19; Leviticus 24:10; Deuteronomy 23:7, Acts 7:24, 28
15. Ethiopia, Esther 1:1; Job 28:19; Psalm 68:31;  Ezekiel 29:10;  Amos 9:7;  Zephaniah 3:10
16. Greece, Daniel 8:21; 10:20; 11:2; Zechariah 9:13; Acts 20:2
17. India, Esther 1:1; 8:9
18. Italy, Acts 18:2; 27:1, 6;  Hebrews 13:24.
19. Lebanon, Deuteronomy 1:7; 3:25; Joshua 1:4; 1 Kings 4:33; 2 Chronicles 2:8; Ezra 3:7; Psalm 29:5; Isaiah 2:13; Jeremiah 18:14; Ezekiel 17:3; Hosea 14:5; Zechariah 10:10
20. Libya, Ezekiel 30:5; Acts 2:10
21. Macedonia, Acts 16:9; 18:5; 19:21;  Romans 15:26;  Philippians 4:15; 1 Timothy 1:3
22. Medes, 2 Kings 17:6; 18:11; Isaiah 13:17; Daniel 5:28; Acts 2:9
23. Mesopotamia, Genesis 24:10; Deuteronomy 23:4; Judges 3:8; Acts 2:9; 7:2
24. Midian, Genesis 37:28; Numbers 10:29; 25:6, 14, 15
25. Moab, Deuteronomy 23:3, Ruth 1:4; 2:6; 1 Kings 11:1; Nehemiah 13:1
26. Pamphylia, Acts 2:10; 14:24; 15:38; 27:5
27. Parthians,  Acts 2:9
28. Persia, 2 Chronicles 36:20, 22, 23; Ezra 1:1, 2, 8; Ezekiel 27:10; Daniel 8:20
29. Phrygia, Acts 2:10; 18:23
30. Pontus, Acts 2:9; 18:2; 1 Peter 1:1
31. Samaria, 1 Kings 13:32; 2 Kings 1:2; Isaiah 7:9; 10:10; Ezekiel 16:46; Hosea 7:1; Amos 3:9;  Obadiah 19; Micah 1:1; John 4:4; Acts 1:8
32. Scythia, Colossians 3:11
33. Spain, Romans 15:24, 28