Regular Portuguese Verbs—full conjugation chart for regular Portuguese verbs ending in -ar, -er and -ir — also a quick conjugation guide
Some Irregular Portuguese Verbs—full conjugation chart for many important Portuguese irregular verbs

IMPERSONAL (INFINITIVE) -- verb form used chiefly as a noun (Example: to speak)

PERSONAL INFINITIVE -- verb form used chiefly as a noun (Example: (for) me to speak)

PARTICIPLE -- verb form used as an adjective (Example: spoken)

GERUND -- verb form often also used as both a noun and an adjective and ending in -ing (Example: speaking)

INDICATIVE MOOD (SIMPLE) -- the Indicative states a fact or asks a question

PRESENT INDICATIVE (Examples: I speak, you speak, he speaks, she speaks, they speak)

IMPERFECT INDICATIVE (Examples: I was speaking, you were speaking, he was speaking, she was speaking, they were speaking -- I used to speak, you used to speak, he used to speak, she used to speak, they used to speak)

PRETERIT INDICATIVE -- the Preterit expresses a past action or state (Examples: I spoke, you spoke, he spoke, she spoke, they spoke)

PLUPERFECT INDICATIVE -- the Pluperfect can also be called Past Perfect and is used to denote that an action or event completed before a given or implied past time (Examples: I had spoken, you had spoken, he had spoken, she had spoken, they had spoken)

SIMPLE FUTURE INDICATIVE (Examples: I will speak, you will speak, he will speak, she will speak, they will speak, I shall speak, you shall speak, he shall speak, she shall speak, they shall speak)

COMPOUND FUTURE INDICATIVE (Examples: I will speak, you will speak, he will speak, she will speak, they will speak, I shall speak, you shall speak, he shall speak, she shall speak, they shall speak)

INDICATIVE MOOD (COMPOUND) -- the Indicative states a fact or asks a question

PRESENT PERFECT INDICATIVE (Examples: I have spoken, you have spoken, he has spoken, she has spoken, they have spoken -- I have been speaking, you have been speaking, he has been speaking, she has been speaking, they have been speaking)

PLUPERFECT INDICATIVE -- the Pluperfect can also be called Past Perfect and is used to denote that an action or event completed before a given or implied past time) (Examples: I had spoken, you had spoken, he had spoken, she had spoken, they had spoken)

FUTURE PERFECT INDICATIVE (Examples: I will have spoken, you will have spoken, he will have spoken, she will have spoken, they will have spoken -- I shall have spoken, you shall have spoken, he shall have spoken, she shall have spoken, they shall have spoken)

SUBJUNCTIVE MOOD (SIMPLE) -- the Subjunctive is used to express a condition, hypothesis, contingency, etc., rather than an actual state (The Subjunctive occurs in the Dependent Clause of a sentence)

PRESENT SUBJUNCTIVE (Examples: I may speak, you may speak, he may speak, she may speak, they may speak)

IMPERFECT SUBJUNCTIVE (Examples: I might speak you might speak, he might speak, she might speak, they might speak)

FUTURE SUBJUNCTIVE (Examples: if I were to speak, if you were to speak, if he were to speak, if she were to speak, if they were to speak -- if I would speak, if you would speak, if he would speak, if she would speak, if they would speak -- if I should speak, if you should speak, if he should speak, if she should speak, if they should speak -- if I may speak, if you may speak, if he may speak, if she may speak, if they may speak -- if I might speak, if you might speak, if he might speak, if she might speak, if they might speak)

SUBJUNCTIVE MOOD (COMPOUND) -- the Subjunctive is used to express a condition, hypothesis, contingency, etc., rather than an actual state (The Subjunctive occurs in the Dependent Clause of a sentence)

PRESENT PERFECT SUBJUNCTIVE (Examples: I may have spoken, you may have spoken, he may have spoken, she may have spoken, they may have spoken)

PLUPERFECT SUBJUNCTIVE -- the Pluperfect can also be called Past Perfect and is used to denote that an action or event completed before a given or implied past time(Examples: I might have spoken, you might have spoken, he might have spoken, she might have spoken, they might have spoken)

FUTURE PERFECT SUBJUNCTIVE (Examples: if I were to speak, if you were to speak, if he were to speak, if she were to speak, if they were to speak -- if I would speak, if you would speak, if he would speak, if she would speak, if they would speak -- if I should have spoken, if you should have spoken, if he should have spoken, if she should have spoken, if they should have spoken -- if I may have spoken, if you may have spoken, if he may have spoken, if she may have spoken, if they may have spoken -- if I might have spoken, if you might have spoken, if he might have spoken, if she might have spoken, if they might have spoken)

CONDITIONAL MOOD -- the Conditional is called the Preterit Future in Portuguese

SIMPLE (Examples: I would speak, you would speak, he would speak, she would speak, they would speak -- I should speak, you should speak, he should speak, she should speak, they should speak)

COMPOUND (Examples: I would have spoken, you would have spoken, he would have spoken, she would have spoken, they would have spoken -- I should have spoken, you should have spoken, he should have spoken, she should have spoken, they should have spoken)

IMPERATIVE MOOD

AFFIRMATIVE FORM (Examples: speak (thou/you/we/ye/they)

NEGATIVE FORM (Examples: don't speak (thou/you/we/ye/they)