The TGF-β/BMP signaling pathway is essential for various cellular processes and is crucial throughout the life of all metazoans. Its proper function depends on interactions with other signaling pathways, leading to synergistic or antagonistic effects. This review discusses the complex and context-dependent cross-talk between TGF-β/BMP and pathways such as MAPK, PI3K/Akt, Wnt, Hedgehog, Notch, and cytokine pathways. These interactions are crucial for development, homeostasis, and disease. The TGF-β pathway interacts with the MAPK pathway, where HER2/Ras can antagonize TGF-β-induced apoptosis and promote cell migration. TGF-β also interacts with the PI3K/Akt pathway, where Akt can inhibit Smad3 activity, affecting TGF-β signaling. The Wnt pathway interacts with TGF-β/BMP, with Smad/β-catenin/Lef complexes regulating shared target genes. The Hh pathway interacts with TGF-β/BMP, with Smad3 and Gli proteins modulating Hh activity. The Notch pathway interacts with TGF-β/BMP, where Notch can inhibit TGF-β signaling. The IL, TNF-β, and IFN-γ pathways interact with TGF-β, where TGF-β regulates cytokine availability and signaling. These interactions are essential for various biological processes and are often dysregulated in diseases such as cancer. The complexity of these interactions highlights the importance of understanding the molecular mechanisms underlying TGF-β signaling cross-talk.The TGF-β/BMP signaling pathway is essential for various cellular processes and is crucial throughout the life of all metazoans. Its proper function depends on interactions with other signaling pathways, leading to synergistic or antagonistic effects. This review discusses the complex and context-dependent cross-talk between TGF-β/BMP and pathways such as MAPK, PI3K/Akt, Wnt, Hedgehog, Notch, and cytokine pathways. These interactions are crucial for development, homeostasis, and disease. The TGF-β pathway interacts with the MAPK pathway, where HER2/Ras can antagonize TGF-β-induced apoptosis and promote cell migration. TGF-β also interacts with the PI3K/Akt pathway, where Akt can inhibit Smad3 activity, affecting TGF-β signaling. The Wnt pathway interacts with TGF-β/BMP, with Smad/β-catenin/Lef complexes regulating shared target genes. The Hh pathway interacts with TGF-β/BMP, with Smad3 and Gli proteins modulating Hh activity. The Notch pathway interacts with TGF-β/BMP, where Notch can inhibit TGF-β signaling. The IL, TNF-β, and IFN-γ pathways interact with TGF-β, where TGF-β regulates cytokine availability and signaling. These interactions are essential for various biological processes and are often dysregulated in diseases such as cancer. The complexity of these interactions highlights the importance of understanding the molecular mechanisms underlying TGF-β signaling cross-talk.