Although I'm trying to be as extensive as possible, it is not possible here to mention all the miracles in the OT, because some miracles point to larger pictures and cannot be mentioned with clear Bible-verses or -sections, but rather point to whole Bible books, or histories that took place. For example, the way Joseph was lead by God to become Pharao of Egypt, can be considered a miracle, because of the clear leading and providence by God towards his people. The same, applies for Kings, Judges and Phrophets sent to Israel, like for example the way David became king and how he was lead by God. That way, the whole OT can be considered a miracle, including the preservation of it and that we still can read it almost exactly as originally written (See here). Therefore one should really read and study it entirely (including the NT).

120 mentions

No. Miracle Verse 1. Creation of the universe, including plants, animals and humans Genesis 1 and 2 2. The flood Genesis 7 and 8 3. Enoch’s translation (he did not die; he was taken away by God) Genesis 5:24 4. Confusion of languages (tongues) at Babel Genesis 11:1-9 5. The conception and birth of Isaac Genesis 17:17; Genesis 18:12; Genesis 21:1-2 6. Sodomites blinded Genesis 19:11 7. Destruction of the cities Sodom and Gomorrah Genesis 19:24 8. Lot's wife turned into a pillar of salt Genesis 19:26 9. The closing of the wombs of Abimelech's household Genesis 20:17-18 10. The opening of Hagar's eyes Genesis 21:19 11. The conception and birth of Jacob and Esau Genesis 25:19-26 12. The opening of Rachel's womb Genesis 30:22 13. The burning bush not consumed Exodus 3:3 14. Moses’ rod changed into a serpent and back into a rod again Exodus 4:3-4; Exodus 7:10-12 15. Aaron’s rod became a serpent and swallows the other serpents Exodus 7:10-12 16. Moses’ hand made leprous as snow Exodus 4:6-7 17. The ten plagues of Egypt (1): waters become blood Exodus 4:9; Exodus 7:15-25 18. The ten plagues of Egypt (2): frogs Exodus 8:1-15 19. The ten plagues of Egypt (3): lice Exodus 8:16-19 20. The ten plagues of Egypt (4): flies Exodus 8:20-32 21. The ten plagues of Egypt (5): a very grievous murrain (the cattle of Egypt died; not that of Israel) Exodus 9:1-7 22. The ten plagues of Egypt (6): ashes becoming small dust, becoming boils breaking out with blains Exodus 9:8-12 23. The ten plagues of Egypt (7): fire and hail Exodus 9:18-35 24. The ten plagues of Egypt (8): locusts/grasshoppers Exodus 10:1-20 25. The ten plagues of Egypt (9): thick darkness in Egypt (but Israel did have light) Exodus 10:21-29 26. The ten plagues of Egypt (10): death of the first-born Exodus 12:29-32 27. The pillar of cloud and fire Exodus 13:21-22; Exodus 14:19-20 28. Red Sea divided; Israel passes through Exodus 14:21-31 29. The Pharao and his entire army destroyed by the divided waters flowing back Exodus 14:26-28 30. Healing the bitter waters of Marah Exodus 15:23-25 31. Quails in the evening and dew in the morning; the Manna (daily; except on Sabbath) Exodus 16:13-21; Numbers 11:31 32. Water from the rock at Rephidim Exodus 17:5-7 33. The defeat of Amalek (when Moses held up his hands, Israel prevailed) Exodus 17:9-13 34. Thundering and lightning on Mount Sinai Exodus 19:16-20; Exodus 24:10; Exodus 24:15-17; Deuteronomy 4:33 35. The transfiguration of the face of Moses Exodus 34:29-35 36. Fire from the Lord consumed the sacrifice Leviticus 9:24 37. Nadab and Abihu consumed by fire for offering strange fire Leviticus 10:1-11 38. Some of the people consumed by fire at Taberah Numbers 11:1-3 39. Miriam's leprosy, white as snow Numbers 12:10-15 40. The earth opens and swallows up Korah and his company; earth closed over them Numbers 16:32-34; Deuteronomy 11:6-7 41. Fire at Kadesh, consumed 250 men that offered incense Numbers 16:35-45 42. Plague at Kadesh; 14.700, who murmured about the Fire at Kadesh, died by the plague Numbers 16:46-50 43. Aaron's rod budding, blooming blossoms and yielding almonds at Kadesh Numbers 17:1-11 44. Water from the rock, smitten twice by Moses Numbers 20:7-11 45. The brazen serpent; everyone who looked upon it lived (while being bitten by deadly snakes) Numbers 21:8, 9 46. Balaam's donkey speaks Numbers 22:23-30 47. The preservation of Moses (eyes had not gone dim, nor his natural force abated) Deuteronomy 34:7 48. The Jordan river divided and Israel passed over Joshua 3:14-17 49. The walls of Jericho fell down Joshua 6:6-20 50. Hailstorm; large stones, killing the enemies (the Amorites) Joshua 10:11 51. The sun and moon stood still (from the viewpoint of man; as they experienced/saw it) Joshua 10:12-14 52. Fire from the Lord consumed sacrifice Judges 6:21 53. Dew on Gideon's fleece, while dry upon the land and vice versa Judges 6:37-40 54. The way the Midianites were destroyed by Gideon, with God’s help Judges 7:14-22 55. Angel appears to Manoach’s wife Judges 13:3-7 56. Angel appears to both Manoach and his wife. Angel ascending in the flame of the altar Judges 13:8-21 57. The strength of Samson Judges 16:17 58. Samson kills a lion barehanded Judges 14:5-6 59. Samson kills 30 Philistines when the Spirit of the Lord came upon him Judges 14:19 60. Samson catches 300 voxes, ties them together, put firebrands in between two tails; burnt up fields Judges 15:1-5 61. Samson breaks 2 new ropes whit which he was tied Judges 15:14 62. Samson beats thousand men with a jawbone of an ass Judges 15:14 63. Water from a hollow place that is in Lehi, so Samson can drink Judges 15:19 64. Samson carries away city gates Judges 16:3 65. Samson breaks 7 green withs, being tied by Delilah Judges 16:6-9 66. Samson breaks new, never used ropes, bound tightly with. He snaps them like a thread Judges 16:10-12 67. Samson frees himself from tied down hair Judges 16:13-14 68. Samson regains power and destroys temple, including himself and about 3000 men and women Judges 16:25-30 69. Fire from the Lord consumed sacrifice Judges 13:19-20 70. Dagon falls twice before the ark of the Covenant 1Samuel 5:1-12 71. Emerods on the Philistines 1Samuel 5:1-12 72. Nursing cows leave calves to return the ark in a straight way 1Samuel 6:7-14 73. Men of Beth-shemesh smitten for looking into the ark 1Samuel 6:19 74. Thunderstorm causes a panic among the Philistines at Eben-ezer 1Samuel 7:10-12 75. Thunder and rain in harvest at Gilgal 1Samuel 12:18 76. Sound in the tops of the mulberry trees at Rephaim 2Samuel 5:23-25 77. Uzzah smitten for touching the ark at Perez-uzzah 2Samuel 6:6, 7 78. The plague sent by God upon Israel, 70.000 died 1Chronicles 21:14 79. God sent an angel to destroy Jerusalem and repent; David saw the angel, sacrifice; burnt offering 1Chronicles 21:15-30 80. Fire from the Lord consumed sacrifice 2Chronicles 7:1 81. Jeroboam's hand withered/stiffened (could not pull it in again to him); healed/restored after prayer 1Kings 13:4-6 82. Jeroboam's new altar destroyed at Bethel 1Kings 13:5 83. Elijah Is fed by ravens (bread and flesh in the morning and evening), commanded by the Lord 1Kings 17:6 84. Widow of Zarephath's meal and oil increased 1Kings 17:9-16; Luke 4:26 85. Widow's son raised from the dead 1Kings 17:17-24 86. Drought at Elijah's prayers/command 1Kings 17:1; 1Kings 18; James 5:17 87. Fire at Elijah's prayers 1Kings 18:19-39 88. Rain at Elijah's prayers 1Kings 18:41-45 89. Elijah is fed by an angel 1Kings 19:4-8 90. Ahaziah's captains consumed by fire near Samaria 2Kings 1:10-12 91. Jordan divided by Elijah near Jericho 2Kings 2:7-8 92. Elijah carried up into Heaven 2Kings 2:11 93. Jordan river divided by Elisha near Jericho 2Kings 2:14 94. Waters of Jericho healed by Elisha's casting salt into them 2Kings 2:21, 22 95. Bears out of the wood destroy forty-two young men 2Kings 2:24 96. Water provided for Jehoshaphat and the allied army 2Kings 3:16-20 97. Midianites believe water is blood and are destroyed 2Kings 3:20-23 98. The widow's oil multiplied 2Kings 4:2-7 99. The Shunammite's raised from the dead at Shunem 2Kings 4:32-37 100. The deadly pottage cured with meal at Gilgal 2Kings 4:38-41 101. A hundred men fed with twenty loaves at Gilgal 2Kings 4:42-44 102. Naaman cured of leprosy, Gehazi afflicted with it 2Kings 5:10-27 103. The iron axe-head made to float, river Jordan 2Kings 6:5-7 104. Ben hadad's plans discovered.  Hazael's thoughts, etc 2Kings 6:12 105. Elisha Causes the eyes of his servant to be opened 2Kings 6:17 106. The Syrian army smitten with blindness at Dothan 2Kings 6:18 107. The Syrian army cured of blindness at Samaria 2Kings 6:20 108. God panics the Syrians 2Kings 7:6-7 109. Elisha's bones revived the dead 2Kings 13:21 110. Sennacherib's army destroyed 2Kings 19:35; Isaiah 37:36 111. Hezekiah healed 2Kings 20:7 112. Shadow of sun goes back ten steps on the sun-dial-stairway of Ahaz 2Kings 20:9-11 113. Uzziah struck with leprosy 2Chronicles 26:16-21 114. Shadrach, Meshach, and Abed-nego delivered from the fiery furnace Daniel 3:10-27 115. Daniel saved in the lions' den Daniel 6:16-23 116. Jonah in the fish's belly.  Safely landed Jonah 2:1-10 117. Hezekiah's cure Isaiah 38:21 118. The sea was calmed when Jonah was thrown into it Jonah 1:15 119. Jonah in the belly of the great fish Jonah 1:17; Jonah 2:10 120. God appointed a plant to grow for Jonah’s comfort, then a worm to wither it Jonah 4:6-11