No, the tiniest living organisms, which are single-celled organisms like bacteria and archaea, do not have tissues.

Here's why:

* Tissues are groups of similar cells that work together to perform a specific function. For example, muscle tissue is made up of muscle cells that contract to allow movement.

* Single-celled organisms are just one cell. They perform all the functions necessary for life within that single cell, such as metabolism, reproduction, and response to stimuli.

* Multicellular organisms, like plants and animals, are composed of many cells that work together to form tissues. These tissues then form organs, and organs form organ systems.

So, while single-celled organisms are alive, they don't have the complexity to form tissues.