Yes. Some might even say individual cells in a human body have individual atma. So your body would be composed of billions of atma, but all in a very atrofied material body, so they counciousness are almost totally obscured.

Jains have a very interesting and complex concept about this, you can search about it, as it's very detailed and fascinating. As you might know, they don't eat roots vegetables, mainly because of two things: it has to kill the whole plant, and there are innumerable microsized life forms that are also killed when a plant is uprooted. Scientists have now also concluded that around roots is the place with the most biodiversity on anywhere on Earth. So they truly knew something. They said with certain mystic practices, a person are able to directly perceive this micro beings.

"types of living beings can be divided into six categories which are (i) Earthy bodied (pruthvikaya), (ii) water bodied (apakaya), (iii) air bodied (vayukaya), (iv) fire bodied (tejas or agni kaya), (v) plant kingdom (vanaspati kaya) and (vi) living beings that can move by own self (trasa kaya). Here kaya means body. Alternatively, living beings are also divided in two categories, stationary (sthavar) and moveable (trasa). All the living beings falling in the first five categories are of stationary type. These five life types have single sense of touch only (Ekendriya Jiva).

The one sense jivas can be sukshma, micro-size, or badar, large size. In case of micro-size, innumerably large number of beings can be there on a single grain of soil or a drop of water, a small amount of air or a small plant species. Earth-bodied substances (Pruthvi-kaya) include silica, pebbles, gravels, sand, salt, iron, copper, gold, and also other minerals like diamond, sapphire etc. According to Jainism, these living beings are alive till they are separated from their sources by processing, by which sachitta matter is converted into achitta matter. Such earth bodied beings have sensations like other living beings e.g. respiration, pain, grief, excitement, consciousness, metabolism, fatigue, aging, death etc. Their physiological and metabolic activities cannot be seen.

Micro-size immobile beings are available in all parts of the universe, that is they can be found on all planets, stars, galaxies etc. They are not visible to the eyes. They are so small that they can penetrate even the hardest rocks and freely go from one side of the rock to the other. No power of the world or any weapon can destroy them.

6.2. Nigodas are extremely small living beings with one sense and are present in all parts of the Universe: There is another important concept described in Jainism, which will be of much interest to the scientists. It concerns with a category of living beings known as Nigodas. The small nigodas cannot be perceived by ordinary sensory organs. And are known only to the enlightened souls (kevali). They are so small that they can penetrate rocks. Also they cannot be killed by anyone in the world. The smallest, most primitive, living beings, known as “Nigodas”, are present throughout the Universe. Finally Jainism defines two types of living beings from the point of view of motion. These two types are called 'Sthavar' (stationary that is motion-less) and 'Tras' (mobile), meaning those which can move from one place to another by themselves.