1) Mandarin
1 Billion+ speakers
"Shengdan jie kuaile"
2) English
508 Million speakers
"Merry Christmas / Happy Holidays / Seasons Greetings"
3) Hindustani (most common dialect - Hindi)
497 Million speakers
"mērī krisamasa"
4) Spanish
392 Million speakers
"Feliz Navidad"
5) Russian
277 Million speakers
"S Rozhdestvom"
6) Arabic
246 Million speakers
"Milad majid"
7) Bengali
211 Million speakers
"Shuvo Naba Barsha"
8) Portuguese
191 Million speakers
"Feliz Natal"
9) Malay-Indonesian
159 Million speakers
"Selamat Hari Natal"
10) French
129 Million speakers
"Joyeaux Noël"