A study was conducted to investigate the relationships between phosphorus forms and soils formed on seven parent materials in Southeastern Nigeria. Forms of P studied included total, organic, aluminium bound P (Al-P), iron bound P(Fe-P), calcium bound P(Ca-P) and available P (Bray 1 and 2). Total active P, total inorganic P and reverted P were obtained by calculation. The parent materials type included coastal plain sands (CPS), Beach ridge sands (BS), Alluvial deposits (AD), Basement complex (BC), Basaltic rocks (BR), Sandstones (SS) and Shale (SH). Results showed that total P levels varied widely among the parent materials, ranging from 119 mg kg-1 in BS to 1892 mgkg-1 in BR with the order of relationship being BR > SH > AD > CPS > SS > BC > BS. The relative abundance of the various forms of inorganic P indicated high variability among the soils, showing trace amounts in some parent