THE INVESTIGATION OF MENTAL TOUGHNESS COMPONENTS OF TAEKWONDO ATHLETES OF LATVIA Behnam Boobani1, Juris Grants1, Iveta Boge1, Artur Litwiniuk2, John Abhilash Benjamin3 1Latvian Academy of Sport Education, Address: 333 Brivibas Street, Riga, LV – 1006, Latvia 2J. Piłsudski University of Physical Education in Warsaw, Branch in Biała Podlaska Address: 2 Akademicka Street 2, Biała Podlaska 21-500, Poland 3Bharathidasan University Address: Tiruchirappalli, 620 024, Tamil Nadu, India E-mail: Behnam.Boobani@lspa.lv, Juris.Grants@lspa.lv, Iveta.Boge@lspa.lv, A.Litwiniuk@wp.pl, John.Benjamin@outlook.com This study was aimed to investigate mental toughness components of taekwondo athletes of Latvia. Forty taekwondo athletes (n=40, 17 – 23 years old, at least10 years in the national and international championship) were the subjects. The athletes answered the Latvian version of the Sports Mental Toughness Questionnaire (SMTQ). All computations were performed using SPSS software version 26. The comparison of the results of the research showed there was a statistically significant difference in the confidence component of mental toughness, but control and constancy didn’t change. As mental toughness plays a vital role in athletes’ preparation, coaches should put mental training in their plans.