This article presents a comprehensive review on the synthesis and stability of ferrite nanoparticles such as nickel ferrite (NiFe 2 O 4 ), zinc ferrite (ZnFe 2 O 4 ), manganese ferrite (MnFe 2 O 4 ), iron ferrite (Fe 2 O 3 ), cobalt ferrite (CoFe 2 O 4 ) and also mixed nanoparticles. Different synthetic methods for ferrite nanoparticles have been reviewed such as co-precipitation, thermal decomposition and hydrothermal, microwave-assisted and sonochemical methods. The effect on the stability of different capping agents like canola oil, glycerol, sodium dodecyl, sodium citrate, oleic acid, Triton-100 and sodium dodecyl benzene sulfonates has also been studied.