| Language | Population | Country | Religion | Christian | Evangelical | NT | Engaged |
|---|---|---|---|---|---|---|---|
| Luxembourgeois | 283,000 | Luxembourg | Christianity | 83% | 0.20% | Incomplete | Engaged |
| Portuguese | 83,600 | Luxembourg | Christianity | 92% | 2% | Complete | Engaged |
| French | 33,400 | Luxembourg | Christianity | 65% | 1% | Complete | Engaged |
| Italian | 17,400 | Luxembourg | Christianity | 82% | 1% | Complete | Engaged |
| Vlaams | 16,700 | Luxembourg | Christianity | 91% | 0.20% | Incomplete | Engaged |
| Serbian | 13,200 | Luxembourg | Secular | 40% | 0.20% | Complete | Engaged |
| German, Standard | 11,800 | Luxembourg | Christianity | 65% | 2% | Complete | Engaged |
| Arabic, North Levantine Spoken | 6,230 | Luxembourg | Islam | 30% | 0.50% | Incomplete | Engaged |
| English | 5,410 | Luxembourg | Christianity | 61% | 8% | Complete | Engaged |
| Spanish | 4,480 | Luxembourg | Christianity | 75% | 1% | Complete | Engaged |
| Kabuverdianu | 3,320 | Luxembourg | Christianity | 97% | 7% | Incomplete | Engaged |
| Danish | 2,240 | Luxembourg | Christianity | 86% | 4% | Complete | Engaged |
| Dutch | 1,540 | Luxembourg | Secular | 47% | 4% | Complete | Engaged |
| Swedish | 1,370 | Luxembourg | Christianity | 56% | 7% | Complete | Engaged |
| Hindi | 1,080 | Luxembourg | Hinduism | 4% | 2% | Complete | Unengaged |
| Turkish | 710 | Luxembourg | Islam | 0.00% | 0.00% | Complete | Unengaged |
| Greek | 510 | Luxembourg | Christianity | 91% | 0.40% | Complete | Engaged |