I have added my Linux servers in a monitoring application. This application requires Linux MIBs to be added in it. Kindly help me to get MIBs for different OS like RHEL, Ubantu, Centos & Suse.

Please read the LQ Question Guidelines link in my posting signature. Unless you provide details, there isn't much we can help you with. You say "Linux servers", but don't tell us what version/distro of Linux these servers are running. You say "monitoring application", but don't tell us WHAT monitoring application. You ask for MIB's...but don't tell us WHAT you're wanting to monitor. There are many MIB's that you can have for a system, some are included with the driver(s) for a particular piece of hardware, some are built-in when SNMP is loaded.