The connectivitides are autoimmune diseases that affect many organs. All of them can cause interstitial lung disease, the most frequent forms being the NSIP (nonspecific interstitial pneumonia) and the UIP (usual interstitial pneumonia). The best screening method is the high-resolution chest CT. The treatment of ILD includes glucocorticoids, immunosuppressive and antifibrotic agents, as well as non-pharmacological therapies. We present the screening and treatment algorithm for the ILD in systemic sclerosis, which is very well established. We also discuss the management of the ILD in rheumatoid arthritis, a very prevalent disease, and though of large public interest.