We present the UBVRI CCD photometry in the region of the open cluster NGC 2421 .
Radius of the cluster is determined as \sim 3 ^ { \prime } .0 using stellar density profile .
Our Study indicates that metallicity of the cluster is Z \sim 
0.004 .
The reddening E ( B - V ) = 0.42 \pm 0.05 mag is determined using two colour ( U - B ) versus ( B - V ) diagram .
By combining the 2MASS JHK data with the optical data we determined E ( J - K ) = 0.20 \pm 0.20 mag and E ( V - K ) = 1.15 \pm 0.20 mag for this cluster .
Colour-excess diagrams show normal interstellar extinction law in the direction of the cluster .
We determined the distance of the cluster as 2.2 \pm 0.2 Kpc by comparing the ZAMS with the intrinsic CM diagram of the cluster .
The age of the cluster has been estimated as 80 \pm 20 Myr using the stellar isochrones of metallicity Z = 0.004 .
The mass function slope x = 1.2 \pm 0.3 has been derived by applying the corrections of field stars contamination and data incompleteness .
Our analysis indicate that the cluster NGC 2421 is dynamically relaxed .