Niani may refer to:

• Niani District, a district of the Central River Division of the Gambia
• Niani, Guinea, a village in Guinea
• Niani, an alternative name of the Mali Empire

• St. Nicholas Church, Novopyshminskoe
• St. Nicholas Church (Old Town)
• St. Nicholas Church, Pakefield
• St Nicholas Church, Pakefield
• St Nicholas Church, Ringwould
• St Nicholas' Church, Rochester
• St. Nicholas' Church (Shakhty)
• St. Nicholas' Church, Stará Ľubovňa
• St. Nicholas Church (Staré Město)
• St. Nicholas Church, Stendal
• St Nicholas' Church, Stevenage
• St. Nicholas' Church (Stralsund)
• St Nicholas Church, Sutton, London
• St. Nicholas' Church, Tsimlyansk
• St. Nicholas' Church, Volgograd
• St Nicholas' Church, West Looe
• St. Nicholas' Church, Wismar
• St Nicholas Cliff Lift
• St. Nicholas coal breakers
• St Nicholas Day
• St Nicholas' Day
• St. Nicholas Diocesan School
• St Nicholas, Durham
• St. Nicholas Grammar School
• St. Nicholas Greek Orthodox Church (Tarpon Springs, Florida)