In English, it's simply, "I".
In Chinese, it's 我 (wo).
In Japanese, mm.. there are a few... so which are you referring to?
Today, I would share with on the different ways to refer to "I" in Japanese. This has always intrigued me, since I started learning Japanese. :)
Most common of all is 私 (watashi わたし)
This is most commonly use in textbooks,