In this work we investigate two extended class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0893965916302403&_mathId=si1.gif&_user=111111111&_pii=S0893965916302403&_rdoc=1&_issn=08939659&md5=9a2ed3b24375b47521778fd1191727f0" title="Click to view the MathML source">(3+1)class="mathContainer hidden">class="mathCode">-dimensional Jimbo–Miwa equations. We use the simplified Hirota’s method to derive multiple soliton solutions of distinct physical structures for each extended equation. We show that the dispersion relations and the phase shifts of the extended equations are distinct compared to the dispersion and shifts of the Jimbo–Miwa equation.