  We present results from a search for solar axions with the COSINE-100
experiment. We find no evidence of solar axion events from a data-set of
6,303.9 kg$\cdot$days exposure and set a 90\,\% confidence level upper limit on
the axion-electron coupling, $g_{ae}$, at 1.70~$\times$~$10^{-11}$ for an axion
mass less than 1\,keV/c$^2$. This limit excludes QCD axions heavier than
0.59\,eV/c$^2$ in the DFSZ model and 168.1\,eV/c$^2$ in the KSVZ model.
