Colossally abundant number

IJK or ijk may refer to:

• International Youth Congress of Esperanto
• Izhevsk Airport - IATA code
• Y-Chromosomal Haplogroup "IJK"
• Unit vectors in the Cartesian coordinates are denoted by $\hat{\mathit{ı}}$, $\hat{\mathit{ȷ}}$ and $\hat{\mathit{k}}$ where $\hat{\mathit{ı}}=\left[\begin{array}{c}1\\ 0\\ 0\end{array}\right],\hat{\mathit{ȷ}}=\left[\begin{array}{c}0\\ 1\\ 0\end{array}\right],\hat{\mathit{k}}=\left[\begin{array}{c}0\\ 0\\ 1\end{array}\right]$
• Unit quaternions, similarly, are typically represented by i, j, and k.
• Indhiya Jananayaga Katchi, a political party in Tamilnadu, South India

Template:Disambiguation