Interrelations between the EL2 defects and dislocations in GaAs crystals are examined. Firstly, it is discussed, on the basis of recent results of high‐pressure experiments, why the dislocation‐related EL2 defects can be unquenchable. Next, the experimental data are presented that show a distinct correlation of the EL2 defect concentration with the distribution of indentation‐induced dislocations in n‐type GaAs crystals. Finally, it is argued that the deformation‐induced enhancement of EL2 concentration is caused by dislocation‐mediated generation of arsenic antisites, while in as‐grown LEC GaAs the correlation between EL2 and dislocations results rather from their common origin.