Johnno

"Johnno" is a common Australian and New Zealand diminutive form of the given name "John". It is typically used as a familiar or affectionate nickname. The suffix "-o" (sometimes also "-ie" or "-sy") is frequently added to shortened names in these countries, and "Johnno" follows this convention. The usage of "Johnno" is widespread and generally considered informal. The spelling with a double "n" is more typical than "Johno," though both are seen.