The Appearance of the Dajjal (False Messiah)
A great deceiver will appear claiming to be God. He will be blind in one eye and will travel the earth performing false miracles. He will test the faith of believers. Every Prophet warned their people about the Dajjal. He will be unable to enter Makkah and Madinah.
Sahih Muslim 2937, Sahih al-Bukhari 3439
The Descent of Isa ibn Maryam (Jesus)
Prophet Isa (peace be upon him) will descend from heaven near a white minaret in Damascus. He will break the cross, kill the swine, abolish the jizyah, and rule by the Shariah of Prophet Muhammad (peace be upon him). He will kill the Dajjal at the gate of Ludd.
Sahih Muslim 155, Sahih al-Bukhari 3448
Ya'juj and Ma'juj (Gog and Magog)
Two great tribes of people will be released after the barrier built by Dhul-Qarnayn is broken. They will spread corruption on earth, consume water and resources, and wreak havoc until Allah destroys them by sending worms into their necks.
Sahih Muslim 2937, Quran 18:94-99, Quran 21:96-97
The Smoke (Ad-Dukhan)
A great smoke will cover the earth, affecting believers like a cold and causing immense suffering to disbelievers. It will last for forty days.
Sahih Muslim 2798, Quran 44:10-16
The Rising of the Sun from the West
The sun will rise from the west instead of the east. After this sign, the door of repentance will be permanently closed and no new faith or good deeds will be accepted from those who did not believe before.
Sahih al-Bukhari 4635, Sahih Muslim 157, Quran 6:158
The Beast of the Earth (Dabbat al-Ard)
A great beast will emerge from the earth and speak to mankind. It will mark the believers and disbelievers, distinguishing between them clearly.
Sahih Muslim 2941, Quran 27:82
The Fire that Gathers People
A great fire will emerge from Yemen (from the direction of Aden) that will drive people to the place of gathering (the land of Sham/Syria). This is the last of the major signs before the Day of Judgement.
Sahih Muslim 2901, Sahih al-Bukhari 7118