Present — what is happening now, and what happens habitually
| yo | olvidoI forget | nosotros | olvidamoswe forget |
| tú | olvidasyou forget | vosotros | olvidáisyou all forget |
| él/ella/Ud. | olvidahe/she forgets | ellos/Uds. | olvidanthey forget |
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he olvidadoI have forgotten | nosotros | hemos olvidadowe have forgotten |
| tú | has olvidadoyou have forgotten | vosotros | habéis olvidadoyou all have forgotten |
| él/ella/Ud. | ha olvidadohe/she has forgotten | ellos/Uds. | han olvidadothey have forgotten |
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | olvide(that) I forget | nosotros | olvidemos(that) we forget |
| tú | olvides(that) you forget | vosotros | olvidéis(that) you all forget |
| él/ella/Ud. | olvide(that) he/she forgets | ellos/Uds. | olviden(that) they forget |
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya olvidado(that) I have forgotten | nosotros | hayamos olvidado(that) we have forgotten |
| tú | hayas olvidado(that) you have forgotten | vosotros | hayáis olvidado(that) you all have forgotten |
| él/ella/Ud. | haya olvidado(that) he/she has forgotten | ellos/Uds. | hayan olvidado(that) they have forgotten |
Preterite — a finished past action — it started, it ended
| yo | olvidéI forgot | nosotros | olvidamoswe forgot |
| tú | olvidasteyou forgot | vosotros | olvidasteisyou all forgot |
| él/ella/Ud. | olvidóhe/she forgot | ellos/Uds. | olvidaronthey forgot |
Imperfect — used to / was —ing; background, habits, descriptions
| yo | olvidabaI used to forget | nosotros | olvidábamoswe used to forget |
| tú | olvidabasyou used to forget | vosotros | olvidabaisyou all used to forget |
| él/ella/Ud. | olvidabahe/she used to forget | ellos/Uds. | olvidabanthey used to forget |
Past perfect — had —ed; further back than another past event
| yo | había olvidadoI had forgotten | nosotros | habíamos olvidadowe had forgotten |
| tú | habías olvidadoyou had forgotten | vosotros | habíais olvidadoyou all had forgotten |
| él/ella/Ud. | había olvidadohe/she had forgotten | ellos/Uds. | habían olvidadothey had forgotten |
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | olvidara(that) I forgot | nosotros | olvidáramos(that) we forgot |
| tú | olvidaras(that) you forgot | vosotros | olvidarais(that) you all forgot |
| él/ella/Ud. | olvidara(that) he/she forgot | ellos/Uds. | olvidaran(that) they forgot |
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | olvidase(that) I forgot | nosotros | olvidásemos(that) we forgot |
| tú | olvidases(that) you forgot | vosotros | olvidaseis(that) you all forgot |
| él/ella/Ud. | olvidase(that) he/she forgot | ellos/Uds. | olvidasen(that) they forgot |
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera olvidado(that) I had forgotten | nosotros | hubiéramos olvidado(that) we had forgotten |
| tú | hubieras olvidado(that) you had forgotten | vosotros | hubierais olvidado(that) you all had forgotten |
| él/ella/Ud. | hubiera olvidado(that) he/she had forgotten | ellos/Uds. | hubieran olvidado(that) they had forgotten |
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube olvidadoI had forgotten | nosotros | hubimos olvidadowe had forgotten |
| tú | hubiste olvidadoyou had forgotten | vosotros | hubisteis olvidadoyou all had forgotten |
| él/ella/Ud. | hubo olvidadohe/she had forgotten | ellos/Uds. | hubieron olvidadothey had forgotten |
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | olvidaréI will forget | nosotros | olvidaremoswe will forget |
| tú | olvidarásyou will forget | vosotros | olvidaréisyou all will forget |
| él/ella/Ud. | olvidaráhe/she will forget | ellos/Uds. | olvidaránthey will forget |
Conditional — would —; also softens a request into politeness
| yo | olvidaríaI would forget | nosotros | olvidaríamoswe would forget |
| tú | olvidaríasyou would forget | vosotros | olvidaríaisyou all would forget |
| él/ella/Ud. | olvidaríahe/she would forget | ellos/Uds. | olvidaríanthey would forget |
Future perfect — will have —ed; done by some future point
| yo | habré olvidadoI will have forgotten | nosotros | habremos olvidadowe will have forgotten |
| tú | habrás olvidadoyou will have forgotten | vosotros | habréis olvidadoyou all will have forgotten |
| él/ella/Ud. | habrá olvidadohe/she will have forgotten | ellos/Uds. | habrán olvidadothey will have forgotten |
Conditional perfect — would have —ed; the road not taken
| yo | habría olvidadoI would have forgotten | nosotros | habríamos olvidadowe would have forgotten |
| tú | habrías olvidadoyou would have forgotten | vosotros | habríais olvidadoyou all would have forgotten |
| él/ella/Ud. | habría olvidadohe/she would have forgotten | ellos/Uds. | habrían olvidadothey would have forgotten |
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | olvidare(should) I forget | nosotros | olvidáremos(should) we forget |
| tú | olvidares(should) you forget | vosotros | olvidareis(should) you all forget |
| él/ella/Ud. | olvidare(should) he/she forget | ellos/Uds. | olvidaren(should) they forget |
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | olvidemoslet's forget |
| tú | olvidaforget! | vosotros | olvidadforget! |
| él/ella/Ud. | olvideforget! | ellos/Uds. | olvidenforget! |
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no olvidemoslet's not forget |
| tú | no olvidesdon't forget | vosotros | no olvidéisdon't forget |
| él/ella/Ud. | no olvidedon't forget | ellos/Uds. | no olvidendon't forget |

I — the speaker
| Presente | olvidoI forget |
| Perfecto | he olvidadoI have forgotten |
| Subj. presente | olvide(that) I forget |
| Subj. perfecto | haya olvidado(that) I have forgotten |
| Futuro | olvidaréI will forget |
| Condicional | olvidaríaI would forget |
| Fut. perfecto | habré olvidadoI will have forgotten |
| Cond. perfecto | habría olvidadoI would have forgotten |
| Subj. futuro | olvidare(should) I forget |
| Indefinido | olvidéI forgot |
| Imperfecto | olvidabaI used to forget |
| Pluscuamp. | había olvidadoI had forgotten |
| Subj. imperf. | olvidara(that) I forgot |
| Subj. -se | olvidase(that) I forgot |
| Subj. pluscuamp. | hubiera olvidado(that) I had forgotten |
| Pret. anterior | hube olvidadoI had forgotten |
| Imperativo | — |
| Imper. negativo | — |
we — the speaker plus others
| Presente | olvidamoswe forget |
| Perfecto | hemos olvidadowe have forgotten |
| Subj. presente | olvidemos(that) we forget |
| Subj. perfecto | hayamos olvidado(that) we have forgotten |
| Futuro | olvidaremoswe will forget |
| Condicional | olvidaríamoswe would forget |
| Fut. perfecto | habremos olvidadowe will have forgotten |
| Cond. perfecto | habríamos olvidadowe would have forgotten |
| Subj. futuro | olvidáremos(should) we forget |
| Indefinido | olvidamoswe forgot |
| Imperfecto | olvidábamoswe used to forget |
| Pluscuamp. | habíamos olvidadowe had forgotten |
| Subj. imperf. | olvidáramos(that) we forgot |
| Subj. -se | olvidásemos(that) we forgot |
| Subj. pluscuamp. | hubiéramos olvidado(that) we had forgotten |
| Pret. anterior | hubimos olvidadowe had forgotten |
| Imperativo | olvidemoslet's forget |
| Imper. negativo | no olvidemoslet's not forget |
you (informal) — one person you are familiar with
| Presente | olvidasyou forget |
| Perfecto | has olvidadoyou have forgotten |
| Subj. presente | olvides(that) you forget |
| Subj. perfecto | hayas olvidado(that) you have forgotten |
| Futuro | olvidarásyou will forget |
| Condicional | olvidaríasyou would forget |
| Fut. perfecto | habrás olvidadoyou will have forgotten |
| Cond. perfecto | habrías olvidadoyou would have forgotten |
| Subj. futuro | olvidares(should) you forget |
| Indefinido | olvidasteyou forgot |
| Imperfecto | olvidabasyou used to forget |
| Pluscuamp. | habías olvidadoyou had forgotten |
| Subj. imperf. | olvidaras(that) you forgot |
| Subj. -se | olvidases(that) you forgot |
| Subj. pluscuamp. | hubieras olvidado(that) you had forgotten |
| Pret. anterior | hubiste olvidadoyou had forgotten |
| Imperativo | olvidaforget! |
| Imper. negativo | no olvidesdon't forget |
you all — informal plural, Spain only
| Presente | olvidáisyou all forget |
| Perfecto | habéis olvidadoyou all have forgotten |
| Subj. presente | olvidéis(that) you all forget |
| Subj. perfecto | hayáis olvidado(that) you all have forgotten |
| Futuro | olvidaréisyou all will forget |
| Condicional | olvidaríaisyou all would forget |
| Fut. perfecto | habréis olvidadoyou all will have forgotten |
| Cond. perfecto | habríais olvidadoyou all would have forgotten |
| Subj. futuro | olvidareis(should) you all forget |
| Indefinido | olvidasteisyou all forgot |
| Imperfecto | olvidabaisyou all used to forget |
| Pluscuamp. | habíais olvidadoyou all had forgotten |
| Subj. imperf. | olvidarais(that) you all forgot |
| Subj. -se | olvidaseis(that) you all forgot |
| Subj. pluscuamp. | hubierais olvidado(that) you all had forgotten |
| Pret. anterior | hubisteis olvidadoyou all had forgotten |
| Imperativo | olvidadforget! |
| Imper. negativo | no olvidéisdon't forget |
he, she, you (formal) — one other person — formal you shares it
| Presente | olvidahe/she forgets |
| Perfecto | ha olvidadohe/she has forgotten |
| Subj. presente | olvide(that) he/she forgets |
| Subj. perfecto | haya olvidado(that) he/she has forgotten |
| Futuro | olvidaráhe/she will forget |
| Condicional | olvidaríahe/she would forget |
| Fut. perfecto | habrá olvidadohe/she will have forgotten |
| Cond. perfecto | habría olvidadohe/she would have forgotten |
| Subj. futuro | olvidare(should) he/she forget |
| Indefinido | olvidóhe/she forgot |
| Imperfecto | olvidabahe/she used to forget |
| Pluscuamp. | había olvidadohe/she had forgotten |
| Subj. imperf. | olvidara(that) he/she forgot |
| Subj. -se | olvidase(that) he/she forgot |
| Subj. pluscuamp. | hubiera olvidado(that) he/she had forgotten |
| Pret. anterior | hubo olvidadohe/she had forgotten |
| Imperativo | olvideforget! |
| Imper. negativo | no olvidedon't forget |
they, you all — several others — plural you shares it
| Presente | olvidanthey forget |
| Perfecto | han olvidadothey have forgotten |
| Subj. presente | olviden(that) they forget |
| Subj. perfecto | hayan olvidado(that) they have forgotten |
| Futuro | olvidaránthey will forget |
| Condicional | olvidaríanthey would forget |
| Fut. perfecto | habrán olvidadothey will have forgotten |
| Cond. perfecto | habrían olvidadothey would have forgotten |
| Subj. futuro | olvidaren(should) they forget |
| Indefinido | olvidaronthey forgot |
| Imperfecto | olvidabanthey used to forget |
| Pluscuamp. | habían olvidadothey had forgotten |
| Subj. imperf. | olvidaran(that) they forgot |
| Subj. -se | olvidasen(that) they forgot |
| Subj. pluscuamp. | hubieran olvidado(that) they had forgotten |
| Pret. anterior | hubieron olvidadothey had forgotten |
| Imperativo | olvidenforget! |
| Imper. negativo | no olvidendon't forget |
