 <p>It is not possible.</p> <p>I refer to the following part of Matlab documentation:</p> <blockquote> <p>Valid Names</p> <p>A valid variable name starts with a letter, followed by letters, digits, or underscores. MATLAB is case sensitive, so A and a are not the same variable. The maximum length of a variable name is the value that the namelengthmax command returns.</p> </blockquote> <p>Letter is defined as ANSI character between <code>a-z</code> and <code>A-Z</code>. For example, the following hebrew letter <code>Aleph</code> returns <code>false</code>: </p> <pre><code>isletter('א') </code></pre> <p>By the way, you can always check whether your variable name is fine by using <code>genvarname</code>.</p> <pre><code>genvarname('א') ans = x0x1A </code></pre>