Iago manipulates Othello into believing his wife Desdemona is unfaithful, stirring Othello's jealousy. Othello allows jealousy to consume him, murders Desdemona, and then kills himself.

Does Othello kill himself in the end?

In a vain attempt to prevent his scheme from being revealed, Iago stabs and kills Emilia, and is then taken prisoner while Othello, lamenting the loss of his wife, kills himself next to her. ... Othello's suicide serves as a kind of trial in which he decides on and enacts a punishment for his crime of killing Desdemona.

How does Othello die?

Othello dies by his own hand. He lies next to the deceased Desdemona and stabs himself.