  For a prime number $\ell$ we introduce and study oriented right-angled Artin
pro-$\ell$ groups $G_{\Gamma,\lambda}$(oriented pro-$\ell$ RAAGs for short)
associated to a finite oriented graph $\Gamma$ and a continuous group
homomorphism $\lambda\colon\mathbb Z_\ell\to\mathbb Z_\ell^\times$. We show
that an oriented pro-$\ell$ RAAG $G_{\Gamma,\lambda}$ is a Bloch-Kato
pro-$\ell$ group if, and only if,
$(G_{\Gamma,\lambda},\theta_{\Gamma,\lambda})$ is an oriented pro-$\ell$ group
of elementary type generalizing a recent result of I. Snopche and P. Zalesskii.
Here $\theta_{\Gamma,\lambda}\colon G_{\Gamma,\lambda}\to\mathbb Z_p^\times$
denotes the canonical $\ell$-orientation on $G_{\Gamma,\lambda}$. We invest
some effort in order to show that oriented right-angled Artin pro-$\ell$ groups
share many properties with right-angled Artin pro-$\ell$-groups or even
discrete RAAG's, e.g., if $\Gamma$ is a specially oriented chordal graph, then
$G_{\Gamma,\lambda}$ is coherent, generalizing a result of C. Droms. Moreover,
in this case $(G_{\Gamma,\lambda},\theta_{\Gamma,\lambda})$ has the
Positselski-Bogomolov property generalizing a result of H. Servatius, C. Droms
and B. Servatius for discrete RAAG's. If $\Gamma$ is a specially oriented
chordal graph and ${\rm Im}(\lambda)\subseteq 1+4\mathbb Z_2$ in case that
$\ell=2$, then ${\rm H}^\bullet(G_{\Gamma,\lambda},\mathbb F_\ell) \simeq
\Lambda^\bullet(\ddot{\Gamma}^{\rm op})$ generalizing a well known result of M.
Salvetti.
