What is Lex Loci Contractus?

Legal Definition
In the conflict of laws, the lex loci contractus is the Latin term for "law of the place where the contract is made".
-- Wikipedia
Legal Definition
Contracts. The law of the place where an agreement is made.

2. Generally, the validity of a contract is to be decided by the law of the place where, the contract is made; if valid, there it is, in general, valid everywhere. Story, Confl. of Laws, §242, and the cases there cited. And vice versa if void or illegal there, it is generally void everywhere. Id §243; 2 Kent Com. 457; 4 M. R. 584; 7 M. R. 213; 11 M. R. 730; 12 M. R. 475; 1 N. S. 202; 5 N. S. 585; 6 N. S. 76; 6 L. R. 676; 6 N. S. 631; 4 Blackf. R. 89.

3. There is an exception to the rule as to the universal validity of contracts. The comity of nations, by virtue of which such contracts derive their force in foreign countries, cannot prevail in cases where it violates the law of our own country, the law of nature, or the law of God. 2 Barn. & Cresw. 448, 471. And a furthIer exeeption may be mentioned, namely, that no nation will regard or enforce the revenue laws of another country. Cas. Tem. 85, 89, 194.

4. When the contract is entered into in one place, to be executed in another, there are two loci contractus; the locus celebrate contractus, and the locus solutionis; the former governs in everything which relates to the mode of construing the contract, the meaning to be attached to the expressions, and the nature and validity of the engagement; but the latter governs the performance of the agreement. 8 N. S. 34. Vide 15 Serg. & Rawle 84; 2 Mass. R. 88; 1 Nott & M'Cord, 173; 2 Harr. & Johns. 193, 221; 2 N. H. Rep. 42; 5 Id. 401; 2 John. Cas. 355; 5 Pardes. n. 1482; Bac. Abr. Bail in Civil Causes, B 5; Com. Dig. 545, n.; 1 Supp. to Ves. jr. 270; 8 Ves. 198; 5 Ves. 750.
-- Bouviers Law Dictionary
Legal Definition
The law of the place of the contract. The local law which governs as to the nature, construction, and validity of a contract. See Pritchard v. Norton, 106 U. S. 124, 1 Sup. Ct. 102, 27 L. Ed. 104 ; Gibson v. Connecticut F. Ins. Co. (C. C.) 77 Fed. 565.
-- Black's Law Dictionary
Legal Definition
The law of the place of contracting; the law of the place where the contract is to be performed. See 106 U. S. 124, 27 L. Ed. 104, 1 Sup. Ct. Rep. 102.
-- Ballentine's Law Dictionary
Legal Definition
a Latin phrase for the law of the place where a contract was made.