Fuel injection control apparatus for an internal combustion engine

A fuel injection control apparatus for controlling an amount of fuel injection into a fuel injection port of an intake passage in an internal combustion engine, the fuel injection control apparatus including a wall flow amount estimating section configured to estimate a wall flow amount of the fuel injection port, a catalyst bed temperature estimating section configured to estimate a catalyst bed temperature of a catalyst provided in an exhaust passage and to correct the estimated catalyst bed temperature in accordance with the wall flow amount, and a control section configured to control the fuel injection amount based on the catalyst bed temperature.