Du'a - Excellence of remembrance and glorification of Allah
Du'a - Excellence of sending prayers upon the Prophet (S)
Du'a - Excellence of spreading the Islamic greeting

Du'a - Excellence of visiting the sick
Du'a - When visiting the sick
Du'a - Supplication of the sick who have renounced all hope of life
Du'a - Instruction for the one nearing death
Du'a - When closing the eyes of the deceased
Du'a - Placing the deceased in the grave
Du'a - After burying the deceased
Du'a– Condolence
Du'a - Supplication for the advancement of reward during the funeral prayer
Du'a - Supplication for the deceased at the funeral prayer
Du'a - Visiting graves

Du'a - Forbiddance of ascribing things to omens

Du'a - Remembrance said in the morning and evening
Du'a - Supplication before eating
Du'a - Upon completing the meal
Du'a - Supplication said to one offering a drink

Du'a - Before undressing
Du'a - Etiquette of retiring for the night
Du'a - When Waking up
Du'a - Supplication when turning over during the night
Du'a - Supplication before sexual intercourse

Du'a - Before entering the toilet
Du'a - After leaving the toilet
Du'a - Supplication said upon sneezing

Du'a - Supplication for rain
Du'a - Supplication said when it rains
Du'a - After rainfall
Du'a - Asking for withholding rain
Du'a - Prayer said during a wind storm
Du'a - Supplication upon hearing thunder
Du'a - Supplication said upon seeing the early or premature fruit

Hajj
Du'a - At the black stone
Du'a - Supplication said between the Yemeni corner and the black stone (at the Ka'bah)
Du'a - Supplication said when standing at Mount Safa and Mount Marwah
Du'a - The Day of 'Arafah
Du'a - At the Sacred Site (Al-Mash'ar Al-Haram)
Du'a - When throwing each pebble at the Jamarat
Du'a - The Talbiyah
Du'a - When slaughtering or offering a sacrifice

Du'a - The etiquette of praising a fellow Muslim
Du'a - What a Muslim should say when he is praised

Du'a - Upon entering the home

Travel
Du'a - Supplication for travel
Du'a - For the one left behind
Du'a - Supplication for when the mounted animal (or mean of transportation) stumbles
Du'a - Supplication said when mounting an animal or any means of transport
Du'a - Prayer of the traveler as dawn approaches
Du'a - Remembrance while ascending or descending
Du'a - Stopping or lodging somewhere
Du'a - Supplication of the resident for the traveler
Du'a - Supplication of the traveler for the resident
Du'a - Supplication upon entering a town or village
Du'a - Supplication of the guest for the host
Du'a - While returning from travel

Du'a - Protection from the Dajjal

Du'a - Placing children under Allah's protection
Du'a - Upon seeing a good dream or a bad dream
Du'a - Upon sighting the crescent moon

Salah
Du'a - Supplications upon hearng Adhan (Call to Prayer)
Du'a - Before performing Wudu (Ablution)
Du'a - Upon completing Wudu (Ablution)
Du'a - Supplication when going to the mosque
Du'a - For entering the mosque
Du'a - Supplication at the start of the prayer (after Takbir)
Du'a - While bowing in prayer (Ruku')
Du'a - Upon rising from the bowing position
Du'a - Supplication whilst prostrating (Sujud)
Du'a - Supplication between the two prostrations
Du'a - The Tashahhud
Du'a - Supplication said after the last Tashahhud and before Salam
Du'a - Qunut Al-Witr
Du'a - Remembrance immediately after Salam of the Witr prayer
Du'a - Rememberance after Salam
Du'a - Prayer upon the Prophet (S) after the Tashahhud
Du'a - How the Prophet (S) made Tasbih
Du'a - Upon leaving the mosque

Du'a - Supplication when prostrating due to recitation of the Qur-an

Du'a - When entering the market
Du'a - Remembrance said at a sitting or gathering
Du'a - Supplication for the expiation of sins said at the conclusion of a sitting or gathering

Du'a - Returning a greeting to a kafir
Du'a - What is said to a kafir when he sneezes

Du'a - Returning a supplication after having bestowed a gift or charity upon someone
Du'a - Returning a supplication of forgiveness
Du'a - Seeking forgiveness and repentance
Du'a - Settling a debt
Du'a - Supplication said to the debtor when his debt is settled
Du'a - Supplication for anxiety and sorrow
Du'a - Supplication for fear of Shirk
Du'a - Supplication for one afflicted by a calamity
Du'a - Upon experiencing unrest, fear, apprehensiveness and the like during sleep
Du'a - Supplication for one afflicted by whisperings in prayer or recitation
Du'a - Supplication for one afflicted with doubt in his faith
Du'a - Supplication for one in distress
Du'a - Supplication said upon seeing someone in trial or tribulation
Du'a - Supplication when stricken with a mishap or overtaken by an affair
Du'a - Supplication for one whose affairs have become difficult
Du'a - Supplication for seeking guidance in forming a decision or choosing the proper course- by (Al-Istikharah) prayer
Du'a - Supplication made against an enemy
Du'a - What is said to ward off the deception of the Obstinate Shaytans
Du'a - What to say when in fear of a people
Du'a - What to say when in fear of afflicting something or someone with ones eye

Fasting
Du'a - Upon sighting the crescent moon
Du'a - Supplication said by one fasting when presented with food and does not break his fast
Du'a - Supplication said for one you have insulted
Du'a - Upon breaking fast
Du'a - Supplication said when breaking fast in someone's home
Du'a - When insulted while fasting

Du'a - Supplication said to one who does you a favour
Du'a - Supplication said to one who has offered you some of his wealth
Du'a - Supplication said to one who pronounces his love for you, for Allaah's sake

Du'a - Supplication when wearing a garment
Du'a - Supplication said to someone wearing a new garment
Du'a - Supplication said when wearing a new garment

Du'a - Supplication said to the newlywed
Du'a - The groom's supplication on the wedding night or when buying an animal

Du'a - Supplication said upon hearing a rooster crow or the braying of ass
Du'a - Supplication upon hearing the barking of dogs at night
Du'a - Supplications for expelling the devil and his whisperings
Du'a - Upon committing a sin

Du'a - Upon encountering an enemy or those of authority

Du'a - What to do upon receiving pleasant news
Du'a - What to say upon receiving pleasing or displeasing news
Du'a - What to say and so when feeling some pain in the body
Du'a - What to say at times of amazement and delight
Du'a - What to say when startled
Du'a - When angry