A foam dispensing cap to be mounted on a mouth of a squeeze container, comprising: a cap body composed of a ceiling wall and a cylindrical side wall extending downwardly from a circumferential edge of the ceiling wall; and a partition member having an opening serving as a passage for a content liquid charged in the squeeze container, the partition member being mounted in the cap body, wherein an ejection pipe communicating with a space below the ceiling wall and adapted to eject the content liquid in the container is erected on an upper surface of the ceiling wall; an air chamber is formed in the space below the ceiling wall, the air chamber being partitioned off from a head space of the squeeze container by the partition member when the foam dispensing cap is mounted on the mouth of the squeeze container, characterized in that in the air chamber, an air passage for flowing air within the air chamber to the ejection pipe and a liquid flow path for flowing the content liquid, which has passed through the opening and entered the air chamber, to the ejection pipe communicate with each other, the air passage and the liquid flow path are formed to merge at a confluence, and a region ranging from the confluence to the ejection pipe defines an air-liquid mixture flow path; and when the squeeze container is tilted and squeezed, the content liquid passes through the opening provided in the partition member, enters the air chamber, and flows into the liquid flow path and, simultaneously, air within the air chamber flows into the air passage under a liquid pressure due to entry of the content liquid into the air chamber, whereupon the content liquid flowing into the liquid flow path and the air flowing into the air passage mingle with each other at the confluence, and the content liquid containing air bubbles passes through the ejection pipe and is ejected in a foamy state from a leading end of the ejection pipe. a cap body composed of a ceiling wall and a cylindrical side wall extending downwardly from a circumferential edge of the ceiling wall; and a partition member having an opening serving as a passage for a content liquid charged in the squeeze container, the partition member being mounted in the cap body, wherein an ejection pipe communicating with a space below the ceiling wall and adapted to eject the content liquid in the container is erected on an upper surface of the ceiling wall; an air chamber is formed in the space below the ceiling wall, the air chamber being partitioned off from a head space of the squeeze container by the partition member when the foam dispensing cap is mounted on the mouth of the squeeze container, characterized in that in the air chamber, an air passage for flowing air within the air chamber to the ejection pipe and a liquid flow path for flowing the content liquid, which has passed through the opening and entered the air chamber, to the ejection pipe communicate with each other, the air passage and the liquid flow path are formed to merge at a confluence, and a region ranging from the confluence to the ejection pipe defines an air-liquid mixture flow path; and when the squeeze container is tilted and squeezed, the content liquid passes through the opening provided in the partition member, enters the air chamber, and flows into the liquid flow path and, simultaneously, air within the air chamber flows into the air passage under a liquid pressure due to entry of the content liquid into the air chamber, whereupon the content liquid flowing into the liquid flow path and the air flowing into the air passage mingle with each other at the confluence, and the content liquid containing air bubbles passes through the ejection pipe and is ejected in a foamy state from a leading end of the ejection pipe.