What are the irregular verbs in the subjunctive tense?

There are 6 irregular verbs in the present subjunctive tense; dar, ir, ser, haber, estar, saber.

The conjugations are as follows:

Dar: dé, des, dé, demos, deis, den

Ir: vaya, vayas, vaya, vayáis, vayan

Ser: sea, seas, sea, seamos, seáis, sean

Haber: haya, hayas, haya, hayamos, hayáis, hayan

Estar: esté, estés, esté, estemos, estéis, estén

Saber: sepa, sepas, sepa, sepamos, sepáis, sepan

Although this seems a lot to remember, an easy way to remember which verbs are irregular in the subjunctive is by using the acronym DISHES.