There have been occasional doubts raised by those who thought it possible that this was written by another disciple of the Lord named John, but all the evidence points to the author being John.
Kumekuwa na tuhuma mara kwa mara kutoka kwa wale ambao walidhani inawezekana kwamba hii iliandikwa na mwanafunzi wa Bwana mwingine aitwaye Yohana, lakini ushahidi wote unaelekezwa kwa mwandishi kuwa Yohana.