It depends. If you are saying "it is" then yes. Example: It's black. You're saying "It is black." An example of where it would not need an apostrophe would be like, "Its friends were weird."
Additional answer
Not only does it not need one, it mustn't have one!)
No. A spider is a spider and an apostrophe is an apostrophe.
No, your doesn't have an apostrophe. You're, however, does have an apostrophe because it's a contraction for you and are.
there is no apostrophe
you dont use an apostrophe in will not
An apostrophe is not required.
No. A spider is a spider and an apostrophe is an apostrophe.
you've is the apostrophe of you have
No, your doesn't have an apostrophe. You're, however, does have an apostrophe because it's a contraction for you and are.
The sign for an apostrophe is '. It is used to indicate possession or contraction in written language.
This is an apostrophe.( ' )
there is no apostrophe
you dont use an apostrophe in will not
An apostrophe is not required.
Shall not with an apostrophe is shan't.
Can't is cannot with an apostrophe.
No, taste doesn't have an apostrophe.
No apostrophe is to be putted in this sentence.