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The rotational spectrum of the weakly bound pyrrole-ammonia complex has been observed in the frequency range from ca. 3 to 14,GHz using molecular beam Fourier transform microwave (MB-FTMW) spectroscopy. The assignment of the spectra of two isotopomers (pyrrole-$\mathrm{<mrow\; data-mjx-texclass="ORD">15</mrow>}$NH$3$ and pyrrole-$\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}$NH$3$) was facilitated by initial \textit{ab initio} predictions. Tentative assignments from broadband scans were finally confirmed with application of a novel double resonance technique. \A total of about 15 \textit{a}-type rotational lines for each isotopomer was observed, exhibiting hyperfine structures due to $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}$N nuclear quadrupole coupling. From the spectra, rotational and centrifugal distortion constants as well as $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}$N nuclear quadrupole coupling constants were derived. The results are presented and discussed.