A lithographic printing plate precursor comprising: an image-recording layer on a hydrophilic support, wherein the image-recording layer includes an organic polymer particle, and the organic polymer particle is a reaction product obtained by at least reacting an aromatic polyvalent isocyanate compound having a structure represented by Formula PO and water, in Formula PO, R PO1 represents an alkylene group, n represents an integer of 2 to 200, R PO2 represents a structure not including a radical polymerizable group, and * represents a bonding site to other structures, and wherein the aromatic polyvalent isocyanate compound having the structure represented by Formula PO includes a compound having a structure represented by Formula A-1 and a structure represented by Formula B-1, in Formula A-1, Ar A represents an aromatic ring structure, L A 's each independently represent a single bond or a divalent linking group, nA1 represents an integer of 1 to 4, R A 's each independently represent a monovalent group, nA2 represents an integer of 0 to 3, * and a wavy line portion each independently represent a bonding site to other structures, and mA represents 0 or 1, and in Formula B-1, Ar B represents an aromatic ring structure, L B 's each independently represent a single bond or a divalent linking group, R PO 's each independently represent a group including the structure represented by Formula PO, nB1 represents an integer of 1 to 4, R B 's each independently represent a monovalent substituent, nB2 represents an integer of 0 to 3, * and a wavy line portion each independently represent a bonding site to other structures, and mB represents 0 or 1. an image-recording layer on a hydrophilic support, wherein the image-recording layer includes an organic polymer particle, and the organic polymer particle is a reaction product obtained by at least reacting an aromatic polyvalent isocyanate compound having a structure represented by Formula PO and water, in Formula PO, R PO1 represents an alkylene group, n represents an integer of 2 to 200, R PO2 represents a structure not including a radical polymerizable group, and * represents a bonding site to other structures, and wherein the aromatic polyvalent isocyanate compound having the structure represented by Formula PO includes a compound having a structure represented by Formula A-1 and a structure represented by Formula B-1, in Formula A-1, Ar A represents an aromatic ring structure, L A 's each independently represent a single bond or a divalent linking group, nA1 represents an integer of 1 to 4, R A 's each independently represent a monovalent group, nA2 represents an integer of 0 to 3, * and a wavy line portion each independently represent a bonding site to other structures, and mA represents 0 or 1, and in Formula B-1, Ar B represents an aromatic ring structure, L B 's each independently represent a single bond or a divalent linking group, R PO 's each independently represent a group including the structure represented by Formula PO, nB1 represents an integer of 1 to 4, R B 's each independently represent a monovalent substituent, nB2 represents an integer of 0 to 3, * and a wavy line portion each independently represent a bonding site to other structures, and mB represents 0 or 1. <EOS>