Aesch may refer to:

• Aesch, Basel-Landschaft, a municipality in the Swiss canton of Basel-Landschaft
• Aesch, Lucerne, a municipality in the Swiss canton of Lucerne
• Aesch, Zürich, a municipality in the Swiss canton of Zürich
• Aesch bei Neftenbach, a hamlet in the municipality of Neftenbach in the Swiss canton of Zürich

• Mectron
• Mecula girdled lizard
• Mecum Dealmakers
• Mecum, William
• Me (cuneiform)
• Mecyberna
• Mecyclothorax ferruginiosus
• Mecyclothorax otundicollis
• Mecyclothorax urpuripennis
• Mecyna aversalis
• Mecynargoides
• Mecynargoides kolymensis
• Mecynargus
• Mecynidis
• Mecynippus ciliatus
• Mecynippus pubicornis
• Mecynoceras
• Mecynogea
• Mecynogea lemniscata
• Mecynome aenescens
• Mecynome burgeoni
• Mecynome kivuensis
• Mecynome quadrispinosus
• Mecynome rotundipennis
• Mecynome rufobrunnea