| Language | Population | Country | Religion | Christian | Evangelical | NT | Engaged |
|---|---|---|---|---|---|---|---|
| Vlaams | 6,147,000 | Belgium | Christianity | 69% | 1% | Incomplete | Engaged |
| Walloon | 3,459,000 | Belgium | Christianity | 70% | 1% | Incomplete | Engaged |
| Italian | 214,000 | Belgium | Christianity | 80% | 0.50% | Complete | Engaged |
| Arabic, Moroccan Spoken | 165,000 | Belgium | Islam | 0.10% | 0.07% | Complete | Engaged |
| French | 121,000 | Belgium | Christianity | 76% | 0.50% | Complete | Engaged |
| Dutch | 106,000 | Belgium | Secular | 47% | 4% | Complete | Engaged |
| German, Standard | 101,000 | Belgium | Christianity | 74% | 2% | Complete | Engaged |
| Portuguese | 65,900 | Belgium | Christianity | 94% | 0.60% | Complete | Engaged |
| Kabyle | 52,200 | Belgium | Islam | 5% | 3% | Complete | Engaged |
| Turkish | 50,200 | Belgium | Islam | 0.10% | 0.07% | Complete | Engaged |
| English | 46,700 | Belgium | Christianity | 65% | 0.50% | Complete | Engaged |
| Spanish | 46,300 | Belgium | Christianity | 75% | 0.15% | Complete | Engaged |
| Tachawit | 39,400 | Belgium | Islam | 0.10% | 0.07% | Incomplete | Engaged |
| Urdu | 30,600 | Belgium | Islam | 2% | 0.80% | Complete | Unengaged |
| Kurdish, Northern | 27,600 | Belgium | Islam | 0.10% | 0.07% | Complete | Engaged |
| Arabic, Algerian Spoken | 26,400 | Belgium | Islam | 1% | 0.50% | Complete | Engaged |
| Greek | 18,100 | Belgium | Christianity | 95% | 0.20% | Complete | Engaged |
| Chinese, Mandarin | 17,000 | Belgium | Buddhism | 12% | 3% | Complete | Engaged |
| Chechen | 16,600 | Belgium | Islam | 0.00% | 0.00% | Complete | Engaged |
| Romani, Vlax | 14,900 | Belgium | Christianity | 90% | 18% | Complete | Engaged |
| Lingala | 14,100 | Belgium | Christianity | 94% | 18% | Complete | Engaged |
| Polish | 12,200 | Belgium | Christianity | 90% | 0.12% | Complete | Engaged |
| Arabic, Egyptian Spoken | 11,000 | Belgium | Islam | 7% | 3% | Complete | Engaged |
| Arabic, Tunisian Spoken | 7,690 | Belgium | Islam | 0.30% | 0.20% | Incomplete | Engaged |
| Dari | 4,700 | Belgium | Islam | 0.03% | 0.02% | Complete | Engaged |
| Luxembourgeois | 4,550 | Belgium | Christianity | 95% | 0.05% | Incomplete | Engaged |
| Arabic, Libyan Spoken | 4,390 | Belgium | Islam | 0.10% | 0.07% | Incomplete | Unengaged |
| Russian | 3,870 | Belgium | Christianity | 70% | 0.30% | Complete | Engaged |
| Persian, Iranian | 3,730 | Belgium | Islam | 2% | 2% | Complete | Engaged |
| Tagalog | 3,720 | Belgium | Christianity | 98% | 12% | Complete | Engaged |
| Khmer, Central | 3,620 | Belgium | Buddhism | 7% | 1% | Complete | Engaged |
| Albanian, Tosk | 3,520 | Belgium | Secular | 24% | 0.40% | Complete | Engaged |
| Vietnamese | 3,300 | Belgium | Buddhism | 17% | 10% | Complete | Engaged |
| Assyrian Neo-Aramaic | 2,130 | Belgium | Christianity | 91% | 1% | Complete | Engaged |
| Arabic, Mesopotamian Spoken | 2,100 | Belgium | Islam | 2% | 0.30% | Incomplete | Engaged |