Robbie

Robbie is a short form of the forename Robert. There are two main types of such shortenings: they are convenient for writing, e.g. in lists; or they are essentially spoken pet-names, and thus informal. (See Conventional abbreviations for forenames.)

Short form	Long form	Informal or written	Other short forms	Remarks
Robbie	Robert	informal	Bobbie/Bobby; Rab(bie); Robby; Dob; Hob; Nob(by); Robin	Written convention: Robt

There is a list of similar names at Conventional abbreviations for forenames, as well as the category:short names

Note that any informal form may be spelled in different ways. Notably, any spelling listed that ends in '-ie' may be written with the ending '-y', and vice versa.

Admirers of the Scots poet Robert Burns (1729-1796), particularly Scots who are feeling sentimental, or possibly inebriated, sometimes call him Robbie Burns. English admirers, or mockers, sometimes affect a Scottish accent and call him Rabbie Burns. This is felt in Scotland to be in poor taste.