Tactica
The term Tactica or Taktika (Greek: Τακτικά) can refer to:
Two Byzantine military treatises on tactics and strategy:
- the Tactica of Emperor Leo VI the Wise, written in the early 10th century and attributed to the emperor Leo VI the Wise
 - the Tactica of Nikephoros Ouranos, written in the early 11th century by Nikephoros Ouranos, a Byzantine general
 
The treatises on administrative structure, court protocol and precedence written in the Byzantine Empire, collectively called "Taktika". These were:
- the Taktikon Uspensky, written c. 842
 - the Kletorologion of Philotheos, written in 899
 - the Taktikon Benešević, written in 934–944
 - the Escorial Taktikon or Taktikon Oikonomides after its first editor, written c. 971–975
 - the "Book of Offices" (Taktikon) of pseudo-Kodinos, written in the mid-14th century
 
Firearms
- Saiga Taktika, a Russian combat shotgun
 
Vehicle
- Alvis Tactica, British produced military vehicle