Technical Abstract: More knowledge about diversity of Quantitative Trait Loci (QTL) controlling polygenic disease resistance in natural genetic variation of crop species is required for durably improving plant genetic resistances to pathogens. Polygenic partial resistance to Aphanomyces root rot, due to Aphanomcyces euteiches, one of the most damaging pathogen of pea worldwide, was previously dissected in individual mapping populations but no data is available about the diversity of resistance QTL to A. euteiches in pea natural genetic variation. We performed a meta-analysis of Aphanomyces root rot resistance QTL in the four main pea sources of resistance known to date and compared their genomic localization with genes/QTL controlling morphological or phenological traits. Meta-analysis, conducted from 244 individual QTL reported previously from three mapping populations and in this study from a fourth mapping population resulted in the identification of 27 meta-QTL for resistance to A. euteiches. Confidence intervals of meta-QTL were reduced in average by four-fold compared to mean confidence intervals of independent individual QTL. A moderately low number of 11 consistent meta-QTL, highlighting 7 highly consistent genomic regions, was identified. Seven resistance meta-QTL, including 6 of the highly consistent genomic regions, colocalized with 6 meta-QTL identified in this study for earliness and plant height, and with 3 morphological genes (Af, A, R). Most alleles contributing to resistance did not cosegregate with desired developmental alleles for dry pea breeding. QTL meta-analysis provided an overview of the moderately low diversity of loci controlling partial resistance to A. euteiches in four main pea sources of resistance. It helped to point out seven highly consistent genomic regions useful in Marker-Assisted-Selection for increasing resistance, to suggest reduced confidence intervals at several main QTL regions and to identify cosegregations between resistance and morphological/phenological alleles