Stark broadening is dominant mechanism of broadening for spectral lines in high-density plasma. Collisions of emitters and absorbers with electrically charged particles influence on spectral line profiles in plasma. Lines in spectra become broadened and shifted because of splitting and shifting the energy levels of atoms in electric field (Stark effect). This work focuses on research of stellar plasma, although the results can be used in a study of laboratory plasma as well. Importance of Stark broadening of spectral lines for analysis, interpretation and synthesis of the star spectra, diagnostics, analysis and modeling of stellar plasma is considered in astrophysics as well, as the significance of these results for laboratory research, e.g. fusion and technological plasma or laser physics. The aim is to determine the previously unknown Stark broadening parameters of the spectral lines of transition metals and lanthanides that do not exist in the literature yet, neither measured by laboratory methods nor theoretically determined, for single electrically charged ions (Co II), double electrically charged ions (Lu III), and h·iple electrically charged ions (Zr IV), in order to study the impact ofline broadening on spectra ofhot stars and white dwarfs. The calculations are done by using of modified semiempirical method (MSE, Dimitrijević and Konjević, 1980), where mostly available atomic parameters of the electronic transitions causing spectral lines fonnation are used as input. The results were also used to check the property of regularity and systematic trend that had earlier observed in the previous Stark width values, in order to detect new approximation methods of determining the Stark broadening parameters in the case when conditions for use of any of known theoretical approaches are not satisfied.