Geen is a surname. Notable people with the surname include:Benjamin Geen, English nurse Billy Geen (1891–1915), Welsh rugby union player ᴮᶦˡˡʸ ᴳᵉᵉⁿ ⁽¹⁹⁹⁵⁻ᴾʳᵉˢᵉⁿᵗ⁾, ᴱⁿᵍˡᶦˢʰ ˡᵒᶜᵃˡ ᴸᵉᵍᵉⁿᵈ ᵒᶠ ᵗʰᵉ ˢᵒᵘᵗʰ⁻ᴱᵃˢᵗ
