  We propose the generic no-scale inflation inspired from string theory
compactifications. We consider the K\"ahler potentials with an inflaton field
$\varphi$, as well as one, two, and three K\"ahler moduli. Also, we consider
the renormalizable superpotential of $\varphi$ in general. We study the
spectral index and tensor-to-scalar ratio in details, and find the viable
parameter spaces which are consistent with the Planck and BICEP/Keck
experimental data on the cosmic microwave background (CMB). The spectral index
is $n_s\simeq 1-2/N \sim 0.965$ for all models, and the tensor-to-scalar ratio
$r$ is $r\simeq12/N^2$, $ 83/N^4$ and $ 4/N^2$ for the one, two and three
moduli models, respectively. The particular $r$ for two moduli model comes from
the contributions of the non-negligible higher order term in potential. In the
three moduli model, the scalar potential is similar to the global
supersymmetry, but the K\"ahler potential is different. The E-model with
$\alpha=1$ and T-model with $\alpha=1/3$ can be realized in the one modulus
model and the three moduli model, respectively. Interestingly, the models with
quadratic and quartic potentials still satisfy the current tight bound on $r$
after embedding into no-scale supergravity.

High Energy Physics - Phenomenology;General Relativity and Quantum Cosmology;High Energy Physics - Theory