National Highway 42 (NH 42), (previously part of old National Highways 205 and 219), is a major National Highway in India, that runs in the states of Karnataka, Andhra Pradesh and Tamil Nadu. The northern terminal is at the National Highway 44 junction North of Anantapur inside Karnataka state and the southern terminal is at the National Highway 44 junction near Krishnagiri in Tamil Nadu.
In Karnataka, it passes through Joladarashi chellagurki in bellary district.
In Andhra Pradesh, it passes through Anantapur, Kadiri, Madanapalle, Punganur, Palamaner, Venkatagirikota and Kuppam.
In Tamil Nadu, it connects Krishnagiri with its junction with NH 44.
Route length in states: