LET US

Albanian

nisemi (let us go). (various references)

Finnish

katsokaamme (let us see), edellyttäkäämme (let us assume), älkäämme puhuko siitä enempää (don't let us talk any more about it), älkäämme (don't let us, let us not). (various references)

French

soyons (let us be), donnez-nous le feu vert (let us do), ayons (let us have), allons-nous (let us go). (various references)

German

nehmen wir einmal an (let us assume). (various references)

Hebrew 

הבה (give), נא (behold, please, pray). (various references)

Hungarian

várjunk még! (don't let us start yet!), tegyük fel (let us assume that), tételezzük fel (let us assume that), ne induljunk még! (don't let us start yet!), menjünk a hajóinkhoz (let us unto our ships), menjünk (let's get going, let's go), ezt most ne firtassuk (let us leave it at that, we will not dwell on that). (various references)

Indonesian

misalkan (for example, let us say, supposing that), jangan-jangan (let us hope not, maybe, perhaps, who knows), dimisalkan (for example, let us say, supposing that). (various references)

Pig Latin

etlay usay.(various references)

Romanian

sã presupunem (let us presume that), sã ne despãrţim prieteni (let us part friends), sã ne înţelegem (let us clearly understand each other), sã mergem mai departe (let us proceed), sã mergem (let us go), comunicã-ne tot ce faci (let us know whatever you do). (various references)

Russian 

позволять / давайте. (various references)

Scottish

tiugainn (come), falbhamaid (let us leave). (various references)

Slovene

dajmo. (various references)

Somali

aynu. (various references)

Spanish

vamos a poner que (let us suppose that). (various references)