English is a product of contact with other languages (Hickey, 2010a). This essay explains the major effects of language contact on the languages or dialects involved, using examples from Shetland Scots, which has been influenced by contact with Norn, and from Southern Irish English (S.I.E.), which has been influenced by contact with Irish Gaelic. The focus is on the borrowing of lexical items between Norn and Shetland Scots and of grammatical features between Irish Gaelic and S.I.E. The essay begins with a brief overview of language contact in general and then give examples of the effects of contact from each dialect. Throughout the essay the claim is made that language contact is an ongoing and fluid process and that the examples given merely illustrate the effects of contact necessitated by the particular situation in question, not universal effects of language contact.