An adjustable door lock includes a catch plate having a body and a plurality of flanges positioned on an exterior face of the body such that a corresponding gap is formed between the body and each of the flanges, respectively. Advantageously, a catch having a channel is adjustably connected to the catch plate wherein the catch is selectively interfitted through at least of one of the gaps. A door plate is disposed adjacent to the catch plate and adapted to be secured to the door. A locking bolt is in communication with the door plate and linearly reciprocated along a first linear path passing along the door plate and the channel. Notably, the catch is automatically adjusted along a second linear path orthogonally registered relative to the first linear path such that the linear channel automatically becomes axially aligned with the locking bolt as the locking bolt ingresses and egresses the catch.