To,
The Principal,
_______________ (Name of the College),
_______________ (Address)

Date: __/__/____ (Date)

Subject: Apology for Absence Due to Sickness

Respected Sir/Madam,

I am ____________ (Name of the Student) from __________ (Name of the Department) of your esteemed college, bearing roll number _______________(Roll Number).

I am writing this letter regarding my absence from __/__/____(Start Date) to __/__/____(End Date) due to illness. I was unwell and unable to attend classes during this period.

I apologize for the unexpected leave and assure you that I will diligently cover all missed syllabus at the earliest. I understand your consideration and seek forgiveness for any inconvenience caused.

Thanking you,
Yours Truly,
_______ (Your Name)
_______ (Roll Number)