Tests for assessing movement performance in early childhood, or levels of fundamental motor skills, are focused on a specific target group and have specialized content. A review of the existing literature has revealed that there are dozens of available tests for assessing motor performance in preschool children. However, few tests can evaluate children as young as 2 years old, when their motor skills are just beginning and involve crude, unrefined movements. The primary goal of this research was to construct and validate a test for assessing fundamental motor skills in children aged 2 to 4 years, which would be applicable both in educational institutions and various organized forms of physical activity for children of this age. The study was conducted on a sample of 23 participants aged 2 to 4 years. For the first part of the testing, we used 7 variables from the newly constructed test to assess fundamental motor skills: rolling on a mat - "pancakes," walking on a low beam, two-footed jump over a hurdle, pulling with hands on a bench, quadrupedal walking - "puppy crawl," jumping into support on bars, and overhand throw of a ball from a standing position. For the purpose of validating the newly constructed test, the TGMD-2 (Test of Gross Motor Development-2), which measures 12 basic motor skills, was used. Analysis of the results suggests that the tests showed a satisfactory level of objectivity, as evidenced by the high values of inter-item correlations and Cronbach's alpha coefficients. A slightly lower level of consistency was recorded in the beam walking test, indicating the need for additional revision of the assessment criteria, specifically related to the positioning of the participants' feet. In terms of the sensitivity of the measurement instruments, the normal distribution of results in all seven tests indicates that the tests successfully differentiated participants based on motor abilities. As for factorial validity, the results of factor analysis showed that all tests successfully measure a single common factor – fundamental motor skills. Finally, the pragmatic validity of the tests was confirmed by a high correlation between the results of the newly constructed fundamental motor skills tests and the already known TGMD-2 test. The results indicate that the newly constructed tests can be used as reliable tools for assessing fundamental motor skills in children.