Fluoride phosphor and method of producing the same, wavelength conversion member, and light emitting device

A fluoride phosphor, comprising fluoride particles which have an average particle size of 0.5 μm or more and 3 μm or less and a maximum particle size of 1 μm or more and 18 μm or less, wherein a ratio of the maximum particle size with respect to the average particle size is higher than 1,

• wherein the fluoride particles have a composition comprising:
• an element M containing at least one selected from the group consisting of Group 4 elements, Group 13 elements, and Group 14 elements;
• an alkali metal;
• Mn;
• and F, wherein, when the number of moles of the alkali metal in the composition is 2, the number of moles of Mn in the composition is more than 0 and less than 0.2, the number of moles of the element M in the composition is more than 0.8 and less than 1, and the number of moles of F in the composition is more than 5 and less than 7.