A tire position determination system comprising: tire pressure transmitters respectively coupled to tires, wherein each of the tire pressure transmitters is capable of transmitting a first radio wave signal that includes pressure data and a tire ID; axle rotation detectors respectively arranged on axles, wherein each of the axle rotation detectors detects rotation of a corresponding one of the axles and generates axle rotation information; and a receiver arranged on a vehicle body, wherein the receiver is capable of receiving the first radio wave signal transmitted from each of the tire pressure transmitters, wherein each of the tire pressure transmitters includes: a specific position detector that detects that the tire pressure transmitter has reached a specific position on a rotation path of the tire; and a transmission controller that generates a second radio wave signal, which includes an ID and data indicating that the tire pressure transmitter has reached a specific position on the rotation path of the tire, based on a detection result of the specific position detector and transmits the second radio wave signal from the tire pressure transmitter, and the receiver includes: an axle rotation information acquisition unit that acquires the axle rotation information from each of the axle rotation detectors whenever the receiver receives the second radio wave signal; and a position determination unit that calculates a distribution of the axle rotation information for each of the IDs by collecting statistics of the axle rotation information for each of the IDs and determines tire positions of the tires by specifying an ID of a tire that rotates in synchronism with the axle rotation information of each of the axles based on the distribution, characterized in that in an operation of the tire pressure transmitter, a relatively short first time period, during which transmission of a radio wave signal is allowed, and a second time period, during which transmission of a radio wave signal is temporarily stopped, are alternately repeated, and the transmission controller transmits the second radio wave signal a number of times in the first time period. tire pressure transmitters respectively coupled to tires, wherein each of the tire pressure transmitters is capable of transmitting a first radio wave signal that includes pressure data and a tire ID; axle rotation detectors respectively arranged on axles, wherein each of the axle rotation detectors detects rotation of a corresponding one of the axles and generates axle rotation information; and a receiver arranged on a vehicle body, wherein the receiver is capable of receiving the first radio wave signal transmitted from each of the tire pressure transmitters, wherein each of the tire pressure transmitters includes: a specific position detector that detects that the tire pressure transmitter has reached a specific position on a rotation path of the tire; and a transmission controller that generates a second radio wave signal, which includes an ID and data indicating that the tire pressure transmitter has reached a specific position on the rotation path of the tire, based on a detection result of the specific position detector and transmits the second radio wave signal from the tire pressure transmitter, and a specific position detector that detects that the tire pressure transmitter has reached a specific position on a rotation path of the tire; and a transmission controller that generates a second radio wave signal, which includes an ID and data indicating that the tire pressure transmitter has reached a specific position on the rotation path of the tire, based on a detection result of the specific position detector and transmits the second radio wave signal from the tire pressure transmitter, and the receiver includes: an axle rotation information acquisition unit that acquires the axle rotation information from each of the axle rotation detectors whenever the receiver receives the second radio wave signal; and a position determination unit that calculates a distribution of the axle rotation information for each of the IDs by collecting statistics of the axle rotation information for each of the IDs and determines tire positions of the tires by specifying an ID of a tire that rotates in synchronism with the axle rotation information of each of the axles based on the distribution, characterized in that an axle rotation information acquisition unit that acquires the axle rotation information from each of the axle rotation detectors whenever the receiver receives the second radio wave signal; and a position determination unit that calculates a distribution of the axle rotation information for each of the IDs by collecting statistics of the axle rotation information for each of the IDs and determines tire positions of the tires by specifying an ID of a tire that rotates in synchronism with the axle rotation information of each of the axles based on the distribution, characterized in that in an operation of the tire pressure transmitter, a relatively short first time period, during which transmission of a radio wave signal is allowed, and a second time period, during which transmission of a radio wave signal is temporarily stopped, are alternately repeated, and the transmission controller transmits the second radio wave signal a number of times in the first time period.