In exploring the origins of the Korean language, there are three windows through which we may penetrate the mysteries of this difficult question: archaeological, genetic/ genomic, and linguistic. In this paper I will try to answer this question by looking mainly through the latter two windows. As many linguists have attempted to place the Korean language into the proper language family according to linguistic affinity, I also want to classifly the Korean language with linguistically related languages, mainly the Altaic languages. The so-called Altaic linguistics is very unstable compared with the more rigorously documented Indo-European linguistics. The lack of sufficient evidence, such as a common indigenous lexicon, has made it difficult to ascertain the genetic relationships and origins of languages such as Korean, Japanese, ManchuTungusic (Man, Gold(i), Oroqen, Ewenke, Lamut, Nanay, etc.), Mongolian (Khalkha, Chakhar, Urat, Khorchin, Ordos, Buriat, Oirat, Kalmyk, Da(g)ur, Monguor, Yellow Uighur. etc.) and Turkish (Turkish, Turkmen(ian), Azerbaidjani, Uighur, Uzbek, Kumyk, Tatar, Kazakh, Kirg(h)iz, Yakut, Altai, and chuvash, etc.), which are typically classified as Altaic. Recently Starostin (1991) claimed that Proto-Altaic had disappeared around the sixth century B.C. Other measures are needed to evaluate this hypothesis, though, since the intra-linguistic debate has not provided any clear evidence or breakthroughs. That is why we turn to genetics as an approach and incorporate the results to shed new light on the origins of the Korean language. It has been shown that analysis of mitochondrial DNA, transmitted through maternal lineage, can be used to test this kind of hypothesis. After collecting data from such ethnic groups as Korean, Japanese, Ewenke, Nanay, Khalkha, Buriat, and Turkish, we have investigated information on mtDNA (mitochondrial DNA). While we do not use the popular STR markers on Y chromosomes (namely, DYS19, DYS3891, etc.) in this study, we will type a number of Korean, Tungusic and Mongolian populations on Y chromosomes, and other nuclear markers such as the gene encoding cytochrome B will be isolated by the polymerase chain reaction, as in the next study,. In reality, it was rather difficult to extract genes from hair-roots and saliva, especially when there were not many samples available for serious study. Yet, we could fill the void for Koreans in the map that shows the mitochondrial DNA types in Africans, Australian Aborigines, Caucasians, East Asians, Native Americans and New Guineas. The nucleotide sequences were determined through phylogenetic analysis. If we can position the sequences from Koreans in the currently available genealogical tree based on mitochondrial DNA, we may be able to reassess the existing hypotheses on linguistic genealogy. However, because primordial remains or ancient fragments of linguistic evidence are not readily available in Korea due to special geo-political situations, the position of the Korean language has been left unattested in the genealogical tree based on languages. Nonetheless, there are some examples similar to the Altaic languages that are estimated to have been used in Korea, and using these we may draw the linguistic tree shown below. Turkic Mongolian Manchu-Tungusic Korean Japanese On the other hand, our investigation through which maternal lineage alone has well established a biological lineage can be reported as follows. Turkic Korean/Japanese Mongolian Tungusic Korean is not isolated from Japanese, and the sisterhood with Turkic is also strange because the similarity between Korean and Manchu-Tungusic is more convincing according to linguistic evidences. It looks to be difficult to conclude anything at this stage of research. However, we know the genetic methods are quite scientific, while the comparative linguistic study often relies on abstract reconstruction.