- Source: Duffin
- Chimaera (ikan)
- Badan Pengawas Obat dan Makanan
- Listrik
- Molekul
- Kidung Gregorian
- Hiu karpet
- Dromaeosaurinae
- Daftar masalah matematika yang belum terpecahkan
- Santi Cosma e Damiano
- Twelve O'Clock High
- Duffin
- Shay Duffin
- Duffins Creek
- Graeme Duffin
- Toberlyan Duffin
- Richard Duffin
- Adam Duffin
- Terry Duffin
- Duffin–Schaeffer theorem
- Jess Duffin
Duffin is a surname, and may refer to:
Adam Duffin (1841–1924), Irish unionist politician
Graeme Duffin (born 1956), Scottish guitarist
Jackie Duffin (born 1950), Canadian medical historian and hematologist
Richard Duffin (1909–1996), American physicist
Shay Duffin (1931–2010), American actor
Terry Duffin (born 1982), Zimbabwean cricketer