There are basically two different situations in which you do self-introduction. One situation is you need to introduce yourself to another person; another situation is you need to introduce yourself to a group of strangers.
A simple self-introduction includes: your name, the place where you come from, and then add some more pleasantry.
There are several different ways to tell your name. They are:
Since we are in such a busy world that everything needs to be done quickly, most people do prefer the first two ways.
Next, you need to tell people where you are from, such as your homeland, home country, the company you are working for etc.
At last, show the others more pleasantry.
If you are introducing yourself to another person, you need to say:
Another common way is:
If you are introducing yourself to two or more people, you need to say:
Let's see some examples:
Mike is introducing himself to another person.
Mike is introducing himself to a group of people.