Thicke lahir tanggal 1 Maret 1947, di Kirkland Lake, Ontario, putra Shirley "Joan" Isobel Marie (née Greer), saurang perawat, jeung William Jeffrey, saurang calo saham. Maranéhna cerai dina 1953. Indungna nikah deui ka Brian Thicke, saurang dokter, sarta maranéhna pindah ka Elliot Lake. Alan Thicke lulus ti Elliot Lake Secondary School dina taun 1965, sarta kapilih jadi raja homecoming.
Universitas Ontario Kulon